Boulder (//) is the home rule municipality that is the county seat and the most populous municipality of Boulder County, Colorado, United States. It is the state's 11th-most-populous municipality; Boulder is located at the base of the foothills of the Rocky Mountains at an elevation of 5,430 feet (1,655 m) above sea level. The city is 25 miles (40 km) northwest of Denver.
View of South Boulder from Bear Peak
Location of Boulder in Boulder County, Colorado
|Coordinates: Coordinates: |
|Settled||1858 as Boulder City, N.T.|
|• Type||Home rule municipality|
|• Mayor||Sam Weaver (D)|
|• Mayor Pro Tem||Bob Yates (R)|
|• Home rule municipality||27.36 sq mi (70.86 km2)|
|• Land||26.32 sq mi (68.17 km2)|
|• Water||1.04 sq mi (2.69 km2)|
|Elevation||5,328 ft (1,624 m)|
|• Home rule municipality||97,385|
| • Estimate |
|• Rank||US: 278th|
|• Density||4,014.63/sq mi (1,550.08/km2)|
|• Metro||313,333 (US: 160th)|
|Time zone||UTC−7 (MST)|
|• Summer (DST)||UTC−6 (MDT)|
80301-80310, 80314, 80321-80323, 80328, 80329
|Area code(s)||Both 303 and 720|
The population of the City of Boulder was 97,385 people as of the 2010 U.S. Census, while the population of the Boulder, CO Metropolitan Statistical Area was 294,567. Boulder is known for its association with gold seekers and for being the home of the main campus of the University of Colorado, the state's largest university. The city frequently receives high rankings in art, health, well-being, quality of life, and education.
On November 7, 1861, legislation was passed making way for the state university to be located in Boulder, and on September 20, 1875, the first cornerstone was laid for the first building (Old Main Building) on the CU campus. The university officially opened on September 5, 1877.
The city of Boulder is in Boulder Valley where the Rocky Mountains meet the Great Plains. West of the city are slabs of sedimentary stone tilted up on the foothills, known as the Flatirons. The Flatirons are a widely recognized symbol of Boulder.
The primary water flow through the city is Boulder Creek. The creek was named well ahead of the city's founding, for all of the large granite boulders that have cascaded into the creek over the eons. It is from Boulder Creek that Boulder city is believed to have taken its name. Boulder Creek has significant water flow, derived primarily from snow melt and minor springs west of the city. The creek is a tributary of the South Platte River.
According to the United States Census Bureau, the city has a total area of 25.7 square miles (66.5 km2). 24.7 square miles (63.9 km2) of it is land and 1.0 square mile (2.6 km2) of it (3.97%) is water.
Boulder lies in a wide basin beneath Flagstaff Mountain just a few miles east of the continental divide and about 25 miles (40 km) northwest of Denver. Arapahoe Glacier provides water for the city, along with Boulder Creek, which flows through the center of the city.
Government preservation of open space around Boulder began with the Congress of the United States approving the allocation of 1,800 acres (7.3 km2) of mountain backdrop/watershed extending from South Boulder Creek to Sunshine Canyon in 1899.
Since then, Boulder has adopted a policy of controlled urban expansion. In 1959, city voters approved the "Blue Line" city-charter amendment which restricted city water service to altitudes below 5,750 feet (1,750 m), in an effort to protect the mountain backdrop from development. In 1967, city voters approved a dedicated sales tax for the acquisition of open space in an effort to contain urban sprawl. In 1970, Boulder created a "comprehensive plan" that would dictate future zoning, transportation, and urban planning decisions. Hoping to preserve residents' views of the mountains, in 1972, the city enacted an ordinance limiting the height of newly constructed buildings. A Historic-Preservation Code was passed in 1974, and a residential-growth management ordinance (the Danish Plan) in 1976.
Effective growth management has resulted in a rapid increase in housing costs with the median home price rising 60% over the period 2010 to 2015 to $648,200.
The City of Boulder has created an Urban Wildlife Management Plan which sets policies for managing and protecting urban wildlife. Also, the city's Parks and Recreation and Open Space and Mountain Parks departments have volunteers who monitor parks (including wetlands, lakes, etc.) to protect ecosystems. From time to time, parks and hiking trails are closed to conserve or restore ecosystems. Traditionally, Boulder has avoided the use of chemical pesticides for controlling the insect population. However, with the threat of West Nile virus, the city began an integrative plan to control the mosquito population in 2003 that includes chemical pesticides. Residents can opt-out of the program by contacting the city and asking that their areas not be sprayed.
Also in 2005, the city experimented with using goats for weed control in environmentally sensitive areas. Goats naturally consume diffuse knapweed and Canada thistle, and although the program was not as effective as it was hoped, goats will still be considered in the future weed control projects. In 2010, goats were used to keep weeds under control at the Boulder Reservoir.
The city's Open Space and Mountain Parks department manages approximately 8,000 acres of protected forest land west of the city in accordance with a 1999 Forest Ecosystem Management Plan. The plan aims to maintain or enhance native plant and animal species, their communities, and the ecological processes that sustain them and to reduce the wildfire risk to forest and human communities.
|Climate chart (explanation)|
Boulder has a temperate climate typical for much of the state and receives many sunny or mostly sunny days each year. Under the Köppen climate classification, the city is considered semi-arid (Köppen BSk) with some overlap of a humid subtropical climate (Köppen Cfa), due to its relatively high yearly precipation. Winter conditions range from generally mild to the occasional bitterly cold, with highs averaging in the mid to upper 40s °F (7–9 °C). There are 4.6 nights annually when the temperature reaches 0 °F (−18 °C). Because of orographic lift, the mountains to the west often dry out the air passing over the Front Range, often shielding the city from precipitation in winter, though heavy falls may occur. Snowfall averages 88 inches (220 cm) per season, but snow depth is usually shallow; a strong warming sun due to the high elevation can quickly melt snow cover during the day, and Chinook winds bring rapid warm-ups throughout the winter months. Summers are warm with frequent afternoon thunderstorms. Roughly 30 days reach 90 °F (32 °C) or above each year. Diurnal temperature variation is typically large due to the high elevation and semi-arid climate. Daytime highs are generally cooler than most Colorado cities with similar elevations. However, Boulder's nighttime lows, particularly during winter, are among the warmest in the state. Daily average temperatures remain above 32 °F (0 °C) year-round.
The highest recorded temperature of 104 °F (40 °C) occurred most recently on June 25, 2012. The record low was −33 °F (−36 °C) on January 17, 1930. The coldest high temperature, −12 °F (−24 °C), was on February 4, 1989; while the warmest overnight low was recorded on July 20, 1998, with a temperature of 82 °F (28 °C)
Climate data for Boulder, CO (1981—2010 normals, extremes 1893—present)
|Record high °F (°C)||73
|Mean maximum °F (°C)||66.0
|Average high °F (°C)||46.5
|Daily mean °F (°C)||34.1
|Average low °F (°C)||21.7
|Mean minimum °F (°C)||−0.5
|Record low °F (°C)||−33
|Average precipitation inches (mm)||0.71
|Average snowfall inches (cm)||10.89
|Average precipitation days (≥ 0.01 in.)||5.3||6.4||8.2||10.1||12.1||10.4||10.4||10.8||8.3||7.2||6.0||5.7||101.0|
|Average snowy days (≥ 0.1 in.)||5.1||6.0||6.3||4.2||0.5||0.0||0.0||0.0||0.5||1.8||4.8||5.4||35.5|
|Mean daily daylight hours||9.7||10.7||12.0||13.3||14.4||15.0||14.7||13.7||12.4||11.1||10.0||9.4||12.2|
|Source 1: |
|Source 2: |
|U.S. Decennial Census|
As of the 2010 census, there were 97,385 people, 41,302 households, and 16,694 families residing in the city. The population density was 3,942.7 inhabitants per square mile (1,524.0/km2). There were 43,479 housing units at an average density of 1,760.3 per square mile (680.4/km2). The racial makeup of the city was 88.0% White, 0.9% Black or African American, 0.4% Native American, 4.7% Asian, 0.1% Pacific Islander, 3.2% some other race, and 2.6% from two or more races. 8.7% of the population are Hispanic or Latino of any race.
There were 41,302 households, out of which 19.1% had children under the age of 18 living with them, 32.2% were headed by married couples living together, 5.5% had a female householder with no husband present, and 59.6% were non-families. 35.8% of all households were made up of individuals, and 7.1% were someone living alone who was 65 years of age or older. The average household size was 2.16, and the average family size was 2.84.
Boulder's population is younger than the national average, largely due to the presence of university students. The median age at the 2010 census was 28.7 years compared to the U.S. median of 37.2 years. In Boulder, 13.9% of the residents were younger than the age of 18, 29.1% from 18 to 24, 27.6% from 25 to 44, 20.3% from 45 to 64, and 8.9% were 65 years of age or older. For every 100 females, there were 105.5 males. For every 100 females age 18 and older, there were 106.2 males.
In 2011 the estimated median household income in Boulder was $57,112, and the median family income was $113,681. Male full-time workers had a median income of $71,993 versus $47,574 for females. The per capita income for the city was $37,600. 24.8% of the population and 7.6% of families were below the poverty line. Out of the total population, 17.4% of those under the age of 18 and 6.0% of those 65 and older were living below the poverty line.
Boulder housing tends to be priced higher than surrounding areas. For the 2nd quarter of 2006, the median single-family home in Boulder sold for $548,000 and the median attached dwelling (condo or town home) sold for $262,000. According to the National Association of Realtors, during the same period the median value of one-family homes nationwide was $227,500. The median price of a home exceeded $1 million in July 2016.
The Boulder MSA had a gross metropolitan product of $18.3 billion in 2010, the 110th largest metropolitan economy in the United States.
Arts and cultureEdit
Boulder has hosted a 10 km road run, the Bolder Boulder, on Memorial Day, every year since 1979. The race involves over 50,000 runners, joggers, walkers, and wheelchair racers, making it one of the largest road races in the world. It has the largest non-marathon prize purse in road racing. The race culminates at Folsom Field with a Memorial Day Tribute. The 2007 race featured over 54,000 runners, walkers, and wheelchair racers, making it the largest race in the US in which all participants are timed and the fifth largest road race in the world.
Boulder is home to multiple dance companies and establishments. Boulder Ballet was founded by former American Ballet Theatre dancer Larry Boyette in the 1970s as part of the Ballet Arts Studios. Lemon Sponge Cake Contemporary Ballet was founded in 2004 by Robert Sher-Machherndl, former principal dancer of the Dutch National Ballet and Bavarian State Ballet.
Conference on World AffairsEdit
The internationally syndicated radio program eTown has its headquarters at eTown Hall, at the intersection of 16th and Spruce Streets, in downtown Boulder. Most tapings of this weekly show are done at eTown Hall.
Polar Bear PlungeEdit
Beginning in 1983, hundreds of people head to the Boulder Reservoir on New Year's Day to take part in the annual polar bear plunge. With rescue teams standing by, participants use a variety of techniques to plunge themselves into the freezing reservoir. Once the plunge is complete, swimmers retreat to hot tubs on the reservoir beach to revive themselves from the cold.
Naked Pumpkin RunEdit
Starting in 1998, dozens of people have taken part in a Halloween run down the city's streets wearing only shoes and a hollowed-out pumpkin on their heads. In 2009, local police threatened participants with charges of indecent exposure and no naked runners were reported in official newscasts, although a few naked runners were observed by locals.
For several years on April 20, thousands of people gathered on the CU Boulder campus to celebrate 420 and smoke marijuana at and before 4:20 pm. The 2010 head count was officially between 8,000 and 15,000 with some discrepancy between the local papers and the University administrators (who have been thought to have been attempting to downplay the event). Eleven citations were given out whereas the year before there were only two. 2011 was the last year of mass 420 partying at CU as the university, in 2012, took a hard stance against 420 activities, closing the campus to visitors for the day, using smelly fish fertilizer to discourage gathering at the Norlin Quad, and having out-of-town law enforcement agencies help secure the campus. In 2013, April 20 fell on a Saturday; the university continued the 420 party ban and, again, closed the campus to visitors. In 2015 the government conceded and once again opened the park to visitors on April 20.
Boulder Cruiser RideEdit
The Boulder Cruiser Ride is a weekly bicycle ride in Boulder Colorado. The Boulder Cruiser Ride grew from a group of friends and friends of friends riding bicycles around Boulder into "an all-out public mob". Some enthusiasts gather wearing costumes and decorating their bikes; themes are an integral part of the cruiser tradition. Boulder Police began following the cruiser ride as it gained in popularity. Issues with underage drinking, reckless bicycle riding, and other nuisance complaints led organizers to drop the cruiser ride as a public event. Returning to an underground format, where enthusiasts must become part of the social network before gaining access to event sites, the Boulder Cruiser Ride has continued as a local tradition. On May 30, 2013 over 400 riders attended the Thursday-night Cruiser Ride in honor of "Big Boy", an elk that was shot and killed on New Year's Day by an on-duty Boulder Police officer.
Parks and recreationEdit
Boulder is surrounded by thousands of acres of recreational open space, conservation easements, and nature preserves. Almost 60 percent, 35,584 acres (144.00 km2), of open space totaling 61,529 acres (249.00 km2) is open to the public.
Rock climbing is found near the small unincorporated community of Eldorado Springs, south of Boulder. There are also climbing routes available in the city open space, including climbing routes of varying difficulty on the Flatirons themselves (traditional protection). Boulder Canyon (sport), directly west of downtown Boulder, also has many routes. All three of these areas are affected by seasonal closures for wildlife.
Politically, Boulder is one of the most liberal and Democratic cities in Colorado when viewed from a Federal and State elections lens. As of July 2019[update], registered voters in Boulder County were 43.4% Democratic, 14.7% Republican, 1.6% in other parties, and 40.3% unaffiliated  By residents and detractors alike, the city of Boulder is often referred to as the "People's Republic of Boulder."
In 1974, the Boulder City Council passed Colorado's first ordinance prohibiting discrimination based on sexual orientation. Boulder voters, however, repealed the measure by referendum within a year. In 1975, Boulder County Clerk Clela Rorex was the second in the United States ever to grant same-sex marriage licenses, prior to state laws being passed to prevent such issuance.
The Boulder Valley School District (BVSD) administers the public school system in Boulder.
Charter schools (receiving public funding but under private management) within the city of Boulder include Preparatory High School (9–12), Summit Middle School (6–8), and Horizons Alternative School (K–8).
A variety of private high schools, middle schools and elementary schools operate in Boulder.
Colleges and universitiesEdit
- University of Colorado Boulder, public university which contributes roughly 46,000 residents (30,000 undergraduate students, 7,000 graduate students and 10,000 staff/faculty) to the population.
- Naropa University is a private university based on Buddhist principles. It has approximately 400 undergraduate and over 600 graduate students.
- Auguste Escoffier School of Culinary Arts a culinary school group with campuses in Boulder and Austin, Texas.
- Cooperative Institute for Research in Environmental Sciences (CIRES)
- Cooperative Institute for Research in the Atmosphere (CIRA)
- Center for Astrophysics and Space Astronomy (CASA)
- Colorado Center for Astrodynamics Research (CCAR)
- Institute of Arctic and Alpine Research (INSTAAR)
- Joint Institute for Laboratory Astrophysics (JILA)
- Laboratory for Atmospheric and Space Physics (LASP)
- Geological Society of America, headquartered at 3300 Penrose Place.
- National Ecological Observatory Network (NEON)
- National Center for Atmospheric Research (NCAR) / University Corporation for Atmospheric Research (UCAR)
- National Institute of Standards and Technology (NIST)
- National Oceanic and Atmospheric Administration (NOAA)
- National Snow and Ice Data Center (NSIDC)
- National Solar Observatory (NSO)
- National Telecommunications and Information Administration(NTIA) – Institute for Telecommunication Sciences Boulder
- Renewable and Sustainable Energy Institute (RASEI)
- Rocky Mountain Institute
- Southwest Research Institute Department of Space Studies
- Space Science Institute
- UNAVCO National Science Foundation's Geodetic Facility
- United States Geological Survey (USGS)
Boulder's main daily newspaper, the Daily Camera, was founded in 1890 as the weekly Boulder Camera, and became a daily newspaper the following year. The Colorado Daily was started in 1892 as a university newspaper for CU Boulder. Following many heated controversies over Colorado Daily's political coverage, it severed its ties to the university in 1971. In summer 1996, the Boulder Planet, a free weekly competing with the Boulder Weekly, published its first issue; it ceased publication in February 2000. Newspaper conglomerate Scripps acquired the Colorado Daily in 2005 after its acquisition of the Camera in 1997, leaving the Boulder Weekly as the only locally owned newspaper in Boulder. Scripps relinquished its 50 percent ownership in both daily papers in early 2009 to Media News Group. Boulder Magazine, a lifestyle magazine, was founded in 1978. Boulder Magazine is published three times per year.
Boulder is part of the Denver market for television stations, and it also receives many radio stations based in Denver or Ft. Collins. For cable television, Boulder is served by Comcast Cable. The city operates public service Boulder 8 TV on cable (high- and standard-definition), which airs, live-streams and archives council meetings; with its in-house video production facilities, it also produces news, talk and informational programming. Over-the-air television reception is poor in the western part of the city because of interference from mountains.
Non-commercial community radio station KGNU was founded in 1978 and commercial music station KBCO in 1977. KBCO programs an adult album alternative format and is owned and operated by iHeartMedia. KBCO moved its studios from Boulder to the Denver Tech Center in 2010 but still maintains the Boulder license and transmits from atop Eldorado Mountain south of Boulder.
The University of Colorado Press, a non-profit co-op of various western universities, publishes academic books. Paladin Press book/video publishers and Soldier of Fortune magazine both have their headquarters in Boulder. Paladin Press was founded in September 1970 by Peder Lund and Robert K. Brown. In 1974, Lund bought out Brown's share of the press, and Brown moved on to found Soldier of Fortune magazine the following year.
Since Boulder has operated under residential growth control ordinances since 1976, the growth of employment in the city has far outstripped population growth. Considerable road traffic enters the city each morning and leaves each afternoon, since many employees live in Longmont, Lafayette, Louisville, Broomfield, Westminster, and Denver. Boulder is served by US 36 and a variety of state highways. Parking regulations in Boulder have been explicitly designed to discourage parking by commuters and to encourage the use of mass transit, with mixed results.
Over the years, Boulder has made significant investments in the multi-modal network. The city is now well known for its grade-separated bicycle and pedestrian paths, which are integrated into a network of bicycle lanes, cycle tracks, and on-street bicycle routes. Boulder also provides a community transit network that connects downtown, the University of Colorado campuses, and local shopping amenities. While the city has no rail transit, local and regional shuttle busses are funded by a variety of sources. Due in part to these investments in pedestrian, bicycle, and transit infrastructure, Boulder has been recognized both nationally and internationally for its transportation system.
In 2009, the Boulder metropolitan statistical area (MSA) ranked as the fourth highest in the United States for percentage of commuters who biked to work (5.4 percent). In 2013, the Boulder MSA ranked as the fourth lowest in the United States for percentage of workers who commuted by private automobile (71.9 percent). During the same time period, 11.1 percent of Boulder area workers had no commute whatsoever: they worked out of the home.
Boulder has an extensive bus system operated by the Regional Transportation District (RTD). The HOP, SKIP, JUMP, Bound, DASH and Stampede routes run throughout the city and connect to nearby communities with departures every ten minutes during peak hours, Monday-Friday. Other routes, such as the 204, 205, 206, 208 and 209 depart every 15 to 30 minutes. Regional routes, traveling between nearby cities such as Longmont (BOLT, J), Golden (GS), and Denver (Flatiron Flyer, a bus rapid transit route), as well as Denver International Airport (AB), are also available. There are over 100 scheduled daily bus trips on seven routes that run between Boulder and Denver on weekdays.
Future transit plansEdit
A 41-mile RTD commuter rail route called the Northwest Rail Line is proposed to run from Denver through Boulder to Longmont, with stops in major communities along the way. The Boulder station is to be north of Pearl Street and east of 30th Street. At one time this commuter rail service was scheduled to commence in 2014, but major delays have ensued. In 2016, an initial six-mile segment opened, reaching from downtown Denver to southern Westminster at West 71st Avenue and Federal Boulevard. The remaining 35 miles of the Northwest Rail Line is planned to be completed by 2044, depending upon funding.
These future transit plans, as well as the current Flatiron Flyer Bus Rapid Transit route, are part of FasTracks, an RTD transit improvement plan funded by a 0.4% increase in the sales tax throughout the Denver metro area. RTD, the developer of FasTracks, is partnering with the city of Boulder to plan a transit-oriented development near Pearl and 33rd Streets in association with the proposed Boulder commuter rail station. The development is to feature the Boulder Railroad Depot, already relocated to that site, which may be returned to a transit-related use.
Boulder, well known for its bicycle culture, boasts hundreds of miles of bicycle-pedestrian paths, lanes, and routes that interconnect to create a renowned network of bikeways usable year-round. Boulder has 74 bike and pedestrian underpasses that facilitate safer and uninterrupted travel throughout much of the city. The city offers a route-finding website that allows users to map personalized bike routes around the city.
The headquarters of the free and non-obligatory hospitality exchange network Warm Showers is based in Boulder.
Boulder Municipal Airport is located 3 miles (4.8 km) from central Boulder, is owned by the City of Boulder and is used exclusively for general aviation, with most traffic consisting of single-engine airplanes and glider aircraft.
- Jello Biafra, Dead Kennedys frontman
- Tony Boselli, five-time Pro Bowl offensive tackle
- Arleigh Burke, United States Navy Admiral and Chief of Naval Operations
- Scott Carpenter, Project Mercury astronaut
- Kristin Davis, Sex and the City actress
- John Fante, writer
- Matt Hasselbeck, three-time Pro Bowl quarterback
- Chuck Pagano, former Indianapolis Colts head coach
- Jared Polis, Governor of Colorado
- Albert Allen Bartlett, emeritus professor of physics, frequent lecturer on the dangers of compound growth, and one of the principal backers of the Blue Line in the late 1950s
- Jack Collom, poet who taught Eco-Poetics at Naropa University and also taught in the public schools of Colorado
- Bill Bower, the last surviving pilot who took part in the Doolittle Raid, resided in Boulder from 1966 until his death in 2011
- Justine Frischmann, British artist and former lead singer of Elastica, moved to Boulder in 2005.
- Michael Grab, a Canadian-born artist specializing in rock balancing and photography, who based in Boulder and still practices rock balancing in Boulder Creek.
- Allen Ginsberg, taught at Naropa University and lived much of his life in Boulder
- Carrie Ingalls (Little House on the Prairie) moved to Boulder in 1905 and stayed until 1906, in hope that the local climate would help improve her health.
- Scott Jurek, ultramarathoner, writer and public speaker
- Kimbal Musk, American entrepreneur, philanthropist, and restaurateur, whose restaurant chain began in Boulder. He is the younger brother of billionaire businessman Elon Musk.
- Chief Niwot or Left Hand, a tribal leader of the Arapaho, lived at the site of Boulder. Niwot and his war party rode to a nearby settler's camp whereupon he pronounced his legendary curse: "People seeing the beauty of this valley will want to stay, and their staying will be the undoing of the beauty."
- Phil Plait, "The Bad Astronomer", astronomer, skeptic, writer and popular science blogger
- JonBenét Ramsey, when she was murdered in December 1996. The made-for-TV movie Perfect Murder, Perfect Town: JonBenét and the City of Boulder, based on the book of the same title, released in 2000, dramatized the investigation into the murder, and was filmed on location in Boulder.
- Larry Sellers, actor, has been living in the town.
- Evans Woollen III, architect, originally from Indianapolis, Indiana
In popular cultureEdit
Woody Allen's film Sleeper (1973) was filmed on location in Boulder. Some houses and the Mesa Laboratory of the National Center for Atmospheric Research, designed by I. M. Pei, were used in the film.
Boulder was a setting for Stephen King's book The Stand (1978), as the gathering point for some of the survivors of the superflu. King lived in Boulder for a little less than a year, beginning in the autumn of 1974, and wrote The Shining (1977) during this period.
The television sitcom Mork & Mindy (1978–1982) was set in Boulder, with 1619 Pine St. serving as the exterior shot of Mindy's home. The New York Deli, a restaurant in the Pearl Street Mall, was also featured prominently in the series.
Boulder has gathered many top rankings in recent years for health, well-being, quality of life, education and art. The partial list below shows some of the nominations.
- The 10 Happiest Cities – No. 1 – 2011 - Moneywatch.bnet.com
- Top Brainiest Cities – No. 1 – Portfolio.com
- Ten Best Cities for the Next Decade – No. 4 – Kiplinger's Personal Finance magazine
- Gallup-Healthways Well-Being Index – No. 1 – 2009 - USA Today
- Best Cities to Raise an Outdoor Kid – No. 1 – 2009 - Backpacker Magazine
- America's Top 25 Towns to Live Well – No. 1 – 2009 - Forbes.com
- Top 10 Healthiest Cities to Live and Retire – No. 6 – AARP magazine
- Top 10 Cities for Artists – No. 8 – 2007 - Business Week
- Lesser-Known LGBT Family-Friendly Cities – No. 1 - 2010 – Wearegoodkin.com
- America's Foodiest Town – No. 1 – 2010 - Bon Appetit magazine
- Queerest Cities in America 2015 — No. 10 — 2015 — Advocate.com
- Best housing market nationwide based on home price growth - 2019 - SmartAsset
- Best housing market nationwide based on home price growth and stability - SmartAsset
- Dushanbe, Tajikistan (since May 8, 1987)
- Jalapa, Nicaragua
- Lhasa, Tibet Autonomous Region, China (since 1987)
- Ciudad Mante, Tamaulipas, Mexico
- Yamagata City, Japan (since 1994)
- Yateras, Cuba
- Kisumu, Kenya
- Nablus, Palestine (Since 2016)
- Ramat Negev Regional Council, Israel (Since 2018)
- Kathmandu, Nepal
Landmarks representing Boulder's connection with its various sister cities can be found throughout the city. Boulder's Sister City Plaza – dedicated on May 17, 2007 – is located on the east lawn of Boulder's Municipal Building. The plaza was built to honor all of Boulder's sister city relationships. The Dushanbe Tea House is located on 13th Street just south of the Pearl Street Mall. Dushanbe presented its distinctive tea house as a gift to Boulder in 1987. It was completed in Tajikistan in 1990, then shipped to Boulder where it was reassembled and opened to the public in 1998. A mural representing the relationship between Boulder and Mante, Mexico was dedicated in August 2001. The mural, which was painted by Mante muralist Florian Lopez, is located on the north-facing wall of the Dairy Center for the Performing Arts.
- Outline of Colorado
- State of Colorado
- 2013 Colorado floods
- "Active Colorado Municipalities". State of Colorado, Department of Local Affairs. Archived from the original on December 12, 2009. Retrieved September 1, 2007.
- "Boulder". Geographic Names Information System. United States Geological Survey.
- "Colorado Municipal Incorporations". State of Colorado, Department of Personnel & Administration, Colorado State Archives. December 1, 2004. Retrieved September 2, 2007.
- "Mayor Sam Weaver". bouldercolorado.gov. Retrieved July 15, 2020.
- "From the Editorial Advisory Board: Party affiliation". Boulder Daily Camera. December 28, 2019. Retrieved July 15, 2020.
- "2019 U.S. Gazetteer Files". United States Census Bureau. Retrieved July 1, 2020.
- "U.S. Census website". United States Census Bureau. Retrieved January 31, 2015.
- "Population and Housing Unit Estimates". United States Census Bureau. May 24, 2020. Retrieved May 27, 2020.
- "ZIP Code Lookup". United States Postal Service. Retrieved October 20, 2014.
- "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
- "Boulder Elevation". www.BoulderColoradoUSA.com.
- "Boulder Location". www.boulder.swri.edu.
- "Geographic Identifiers: 2010 Demographic Profile Data (G001): Boulder city, Colorado". U.S. Census Bureau, American Factfinder. Archived from the original on February 12, 2020. Retrieved February 5, 2013.
- "Geographic Identifiers: 2010 Demographic Profile Data (G001): Boulder, CO Metro Area". U.S. Census Bureau, American Factfinder. Archived from the original on February 12, 2020. Retrieved February 5, 2013.
- "History of Boulder". City Of Boulder. Retrieved May 30, 2019.
- "Best of Boulder". City of Boulder. Archived from the original on August 23, 2013. Retrieved February 11, 2011.
- "University of Colorado History". www.Colorado.edu.
- "C.U. History". BoulderGuide. June 30, 2009. Retrieved December 9, 2010.
- "A Boulder Timeline". Boulder History Museum. Archived from the original on October 10, 2014. Retrieved January 17, 2010.
- "Brief History of Colorado". Archived from the original on March 7, 2008.
- Mary Reilly-McNellan. "History of Boulder Mountain Parks" (PDF). Retrieved October 2, 2013.
- "Boulder Area Sustainability Information Network". Boulder Community Network. August 27, 1999. Retrieved December 9, 2010.
- "Contact." Sirna Therapeutics. December 8, 2004. Retrieved March 3, 2012. "2950 Wilderness Place Boulder, CO 80301"
- "Historic Preservation Program Background". City of Boulder. Archived from the original on October 25, 2013. Retrieved September 3, 2012.
- "DID YOU KNOW?... THE STORY OF BOULDER, COLORADO: ITS STRUGGLES TO RECONCILE GROWTH WITH ENVIRONMENTAL PRESERVATION". Archived from the original on July 26, 2006.
- Conor Dougherty (July 3, 2016). "How Anti-Growth Sentiment, Reflected in Zoning Laws, Thwarts Equality". The New York Times. Retrieved July 4, 2016.
- "Urban Wildlife". Bouldercolorado.gov.
- "Park Volunteer Opportunities". Bouldercolorado.gov. September 25, 2012. Archived from the original on October 26, 2013.
- "OSMP closures". Bouldercolorado.gov.
- "Mosquito Control Program". Bouldercolorado.gov. July 6, 2012.
- "Prairie Dogs & Wild Birds Wildlife Protection Ordinance". City of Boulder. January 18, 2005. Retrieved December 9, 2010.
- "Goats keep weeds under control at Boulder Reservoir". Daily Camera. July 28, 2010. Archived from the original on July 25, 2013. Retrieved September 3, 2012.
- "Forest Ecosystem Management Plan". Bouldercolorado.gov.
- "Zipcode 80303 - Boulder Colorado is in Hardiness Zones 5b and 6a". PlantMaps. Retrieved March 21, 2020.
- "Boulder, Colorado". weatherbase. Retrieved March 21, 2020.
- "BOULDER, COLORADO NCDC 1981-2010 Monthly Normals". Retrieved November 17, 2017.
- "NOWData - NOAA Online Weather Data". NOAA. Retrieved June 20, 2020.
- "Denver/Boulder Weather Forecast Office". Retrieved August 10, 2015.
- "Weather History: Boulder Airport". Retrieved June 9, 2015.
- "Boulder Daily Climatology and Daily Records". Retrieved July 10, 2019.
- "Monthly weather forecast and climate: Boulder, CO". Weather Atlas. Retrieved June 20, 2020.
- "Census of Population and Housing". Census.gov. Retrieved June 4, 2015.
- "Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data (DP-1): Boulder city, Colorado". U.S. Census Bureau, American Factfinder. Archived from the original on February 12, 2020. Retrieved February 5, 2013.
- "Selected Economic Characteristics: 2011 American Community Survey 1-Year Estimates (DP03): Boulder City, Colorado". U.S. Census Bureau, American Factfinder. Archived from the original on February 12, 2020. Retrieved February 5, 2013.
- "Metro home prices flat". CNN Money. August 21, 2006. Retrieved April 14, 2008.
- "Cost of average home in Boulder surpasses $1 million". Daily Camera. July 14, 2016. Retrieved February 24, 2017.
- "Gross Metropolitan Product". Greyhill Advisors. Retrieved September 29, 2011.
- "Where Carbon is Taxed". Retrieved September 3, 2013.
- "Best Places For Business and Careers - Forbes". Forbes. Retrieved January 18, 2014.
- "Media Guide" (PDF). Archived from the original (PDF) on March 31, 2004.
- Ryan Thorburn (May 30, 2007). "Bosley hopes race No. 30 runs smoother". Daily Camera. Archived from the original on August 11, 2007.
- "Largest Races". Running USA. Retrieved December 1, 2013.
- Hickman, Holly (September 7, 2009). "About Boulder Phil". Boulderphil.org. Archived from the original on August 8, 2012. Retrieved September 3, 2012.
- Shulgold, Marc, 20 Years of High Notes, Giora Bernstein Ignores Naysayers to Build the Award-winning Colorado Music Festival, Rocky Mountain News, June 12, 1996 (accessed December 13, 2009 via subscription)
- "Our Story – Boulder Ballet". Retrieved January 13, 2019.
- "contemporary ballet choreographer". Lemon Sponge Cake Contemporary Ballet. Retrieved January 13, 2019.
- Brittany Anas (February 2, 2011). "CU-Boulder's Conference on World Affairs announces 'What Matters' theme". Daily Camera.
- "Radio's eTown, a Boulder stage for James Taylor, Emmylou Harris, Buddy Guy, Neko Case even Al Gore". Reverb. Denver Post. January 4, 2013. Archived from the original on January 29, 2016. Retrieved January 23, 2016.
- ANDREW WINEKE (January 23, 2016). "BEHIND 'ETOWN'; Music is entree for radio show's message". The Gazette (Colorado Springs, CO). Archived from the original on February 20, 2016.
- Kaye, Nick (December 23, 2005). "Polar Bear Club Swims: New Year Parties (Don't Hold the Ice)". The New York Times.
- Tidd, Kelly (February 3, 2014). "Boulder Polar Plunge". Your Boulder.
- "Police squash nude pumpkin run". BBC News. November 1, 2009. Retrieved December 9, 2010.
- Anas, Brittany (April 20, 2010). "Thousands gather for 4/20 smoke-out on CU-Boulder campus". Colorado Daily. Archived from the original on September 27, 2011. Retrieved December 9, 2010.
- Rael, Andre (April 21, 2011). "4/20 Boulder Smoke-Out Attracts 10,000". Huffington Post.
- Spellman, Jim (April 20, 2012). "Colorado public pot-smoking event snuffed out". CNN.
- Anas, Brittany; Rubino, Joe; Kuta, Sarah. "CU-Boulder succeeds in snuffing campus 4/20 smoke-out". Denver Post. Archived from the original on October 29, 2013.
- CU Boulder reopening campus after 3 years of 4/20 closures, archived from the original on April 15, 2016, retrieved July 27, 2016
- Miller, Vanessa (August 14, 2009). "Cruisers Closing Ride to Public". Daily Camera. Retrieved June 25, 2013.
- "Sam Carter spared prison in Mapleton elk case, sentenced to 4 years probation". Retrieved June 29, 2015.
- Staff, Camera (May 30, 2013). "Boulder Cruisers Ride for Mapleton Elk". Daily Camera. Retrieved June 25, 2013.
- "Acres of Open Space". Boulder County. Archived from the original on December 30, 2016. Retrieved September 3, 2012.
- "Eldorado Canyon State Park Publications". Colorado State Parks. May 27, 2010. Archived from the original on February 9, 2010. Retrieved December 9, 2010.
- "Flatirons Climbing Council Wildlife Closures". Flatirons Climbing Council. Archived from the original on February 13, 2009. Retrieved December 9, 2010.
- "Colorado Revised Statutes". Justia. Retrieved February 4, 2020.
- "Boulder County Voter Registration Data". election.boco.solutions. Retrieved April 29, 2020.
- Waylon Lewis (June 1, 2013). "Something's Rotten in the People's Republic of Boulder Three Things, to be Exact". Elephant Journal. Retrieved November 29, 2013.
- Herel, Suzanne (February 14, 2004). "San Francisco not the first to marry couples of the same gender". San Francisco Chronicle. Retrieved December 9, 2010.
- "Carnegie Library - Boulder Planet, 1996-2000". Retrieved September 18, 2018.
- "Boulder Magazine | Brock Publishing". May 8, 2014. Retrieved September 18, 2018.
- "Boulder 8 TV". bouldercolorado.gov. Retrieved September 18, 2018.
- "About us". KGNU.
- Walter, Claire (March 18, 2010). "KBCO Abandoning Boulder". Huffington Post. Retrieved May 14, 2018.
- "KBCO-FM Radio Station Information". Retrieved September 3, 2012.
- "Press". Radio1190.org. November 4, 1998. Archived from the original on December 3, 2013.
- "University Press of Colorado - University Press of Colorado, including Utah State University Press". upcolorado.com. Retrieved September 18, 2018.
- "Paladin Press". Paladin Press. Archived from the original on April 25, 2006. Retrieved April 25, 2006.
- "Soldier of Fortune". Sofmag.com. Archived from the original on August 29, 2012.
- "Paladin Press Company History". Paladin-press.com.
- Henao, Alejandro, et al. "Sustainable Transportation Infrastructure Investments And Mode Share Changes: A 20-Year Background Of Boulder, Colorado." Transport Policy 37.(2015): 64-71. Academic Search Complete. Web. 16 Feb. 2016.
- "Commuting in the United States: 2009" (PDF). American Community Survey Reports. September 2011. Archived from the original (PDF) on July 26, 2017. Retrieved December 26, 2017.
- McKenzie, Brian (August 2015). "Who Drives to Work? Commuting by Automobile in the United States: 2013" (PDF). American Survey Reports. Retrieved December 26, 2017.
- "Flatiron Flyer - Bus Rapid Transit". Transportation District of Denver. Retrieved April 13, 2015.
- "Bus Schedules". Regional Transportation District. Retrieved May 15, 2015.
- Engelbart, Drew (July 24, 2016). "RTD's B Line and Westminster Station open". FOX31 Denver. Retrieved February 13, 2016.
- Whaley, Monte (June 29, 2012). "RTD and other officials vow to finish Denver's Northwest Rail Line". Denver Post. Retrieved April 25, 2013.
- "GOBikeBoulder.net". City of Boulder. Archived from the original on October 20, 2014. Retrieved October 20, 2014.
Login as guest required.
- Urie, Heath (May 20, 2013). "Boulder B-cycle launches high-tech bike-sharing program with 100 bikes". Daily Camera. Retrieved October 24, 2013.
- "AirportIQ 5010". BOULDER MUNI. September 18, 2014. Retrieved October 20, 2014.
- "The Blue Line". Boulderblueline.org.
- "Col. William Marsh "Bill" Bower February 13, 1917 – January 10, 2011". Camera. January 12, 2011. Retrieved January 30, 2011.
- Rees Shapiro, T. (January 15, 2011). "Bill Bower, last surviving bomber pilot of WWII Doolittle Raid, dies at 93". Washington Post. Retrieved January 30, 2011.
- Brammer, Rebecca; Greetham, Phil. "Caroline Celestia Ingalls". Laura Ingalls Wilder, Frontier Girl. Retrieved October 20, 2014.
- "Kimbal Musk, owner of The Kitchen restaurants in Colorado, talks food". The Denver Post. August 28, 2013.
- In 1858, Captain Thomas Aikins and some would-be goldminers camped at present-day Setter's Park—in the midst of Arapaho territory. The chief and his people were camped at Valmont Butte: then and now a sacred site to the tribe. See OUR PEOPLE: Southern Arapahos Are Part of Boulder's Spirit, by Judy Mattivi Morley, PhD (Originally appeared in Boulder Magazine, 2005.)
- "The Larry Sellers Web Site -- Biography". Retrieved June 29, 2015.
- Woollen moved to Boulder following his retirement around 2001 from Woollen, Molzan and Partners, the architectural firm he founded in Indianapolis in 1955. Woolley designed his own home in the foothills of the Rocky Mountains and resumed a lifelong interest in abstract painting. See: Megan Fernandez (June 2010). "The Pillar: Evans Woollen". Indianapolis Monthly. Indianapolis, Indiana: 71. Retrieved December 18, 2017.
- "Cut to the chase: Woody Allen at NCAR". UCAR. June 1998. Archived from the original on January 17, 2012. Retrieved October 8, 2011.
- "About the author". StephenKing.com. Retrieved October 8, 2011.
- "Mork and Mindy FAQ". Sitcomsonline.com.
- Mork and Mindy: New York Deli. "Mork and Mindy". Colorado.com.
- Sarah Kuta (April 29, 2011). "'The Office' ex-boss Michael Scott moving to Boulder". Daily Camera. Archived from the original on October 30, 2012. Retrieved October 8, 2011.
- "The 10 Happiest (and Saddest) Cities in the U.S." March 17, 2011. Retrieved March 26, 2011.
- "Brain Bounty or Brain Busted?". Archived from the original on December 3, 2013. Retrieved November 30, 2013.
- "10 Best Cities for the Next Decade". Archived from the original on February 8, 2011. Retrieved February 2, 2011.
- Page, Susan (February 15, 2012), "Western cities fare best in well-being index", USA Today, retrieved July 3, 2012
- The Best Cities to Raise an Outdoor Kid: The Winning 25, August 2009, retrieved July 3, 2012
- Woolsey, Matt (May 4, 2009), "America's Top 25 Towns To Live Well", Forbes, retrieved July 3, 2012
- AARP The Magazine Names the Top 10 Healthiest Places to Live in America, July 23, 2008, archived from the original on July 25, 2013, retrieved July 3, 2012
- "Best of Boulder". Bouldercolorado.gov. Archived from the original on August 23, 2013. Retrieved July 26, 2010.
- Morrison, Gwen (May 17, 2010). "LGBT Family-Friendly Cities Part 2". Wearegoodkin.com. Goodkin, LLC. Archived from the original on June 8, 2010. Retrieved October 20, 2014.
- America's Foodiest Town 2010: Boulder, Colorado, October 2010, retrieved July 3, 2012
- Queerest Cities in America 2015, January 12, 2015, retrieved February 22, 2015
- Passy, Jacob (July 24, 2019). "This city has the No. 1 most stable housing market in the country". MarketWatch. Retrieved July 25, 2019.
- "Boulder Sister City Program". City of Boulder, Colorado. Retrieved December 2, 2019.
- 山形市の友好姉妹都市 [Yamagata City Twin Cities] (in Japanese). Japan: Yamagata City. Archived from the original on April 15, 2012. Retrieved October 12, 2011.
- Fellows, David (August 26, 2018). "It's Official: Ramat HaNegev, Israel Is Boulder's New Sister City". Boulder Jewish News.
- "Sister City Plaza". Retrieved June 29, 2015.
- "Welcome to Boulder-Dushanbe Sister Cities". Retrieved June 29, 2015.
- "Mural " Boulder-Mante Sister City Project". Retrieved June 29, 2015.
- Deloria, Philip J. "Drain the Lake! Tear Down the Butte! Build Paradise!: The Environmental Dimensions of Social and Economic Power in Boulder, Colorado, and Benzie, Michigan," Southern California Quarterly (2007): 65–88. in JSTOR
- Pettem, Silvia. Boulder: Evolution of a City (University Press of Colorado, 1994)
|Wikimedia Commons has media related to Boulder, Colorado.|
|Wikivoyage has a travel guide for Boulder.|
|Wikisource has the text of the 1911 Encyclopædia Britannica article Boulder (Colorado).|