40°N 100°W / 40°N 100°W / 40; -100

United States of America
Motto: 
Other traditional mottos:
Anthem: "The Star-Spangled Banner"[3]
Orthographic map of the U.S. in North America
World map showing the U.S. and its territories
CapitalWashington, D.C.
38°53′N 77°01′W / 38.883°N 77.017°W / 38.883; -77.017
Largest cityNew York City
40°43′N 74°00′W / 40.717°N 74.000°W / 40.717; -74.000
Official languagesNone at the federal level[a]
National languageEnglish (de facto)
Ethnic groups
(2020)[6][7][8]
By race:
By Hispanic or Latino origin:
Religion
(2021)[9]
Demonym(s)American[b][10]
GovernmentFederal presidential constitutional republic
• President
Joe Biden (D)
Kamala Harris (D)
Nancy Pelosi (D)
John Roberts
LegislatureCongress
Senate
House of Representatives
Independence 
July 4, 1776
March 1, 1781
September 3, 1783
June 21, 1788
August 21, 1959
Area
• Total area
3,796,742 sq mi (9,833,520 km2)[c][12] (3rd/4th)
• Water (%)
4.66[11]
• Total land area
3,531,905 sq mi (9,147,590 km2)
Population
• 2021 estimate
331,893,745[13]
• 2020 census
Neutral increase 331,449,281[d][14] (3rd)
• Density
87/sq mi (33.6/km2) (185th)
GDP (PPP)2022 estimate
• Total
Increase $25.35 trillion[15] (2nd)
• Per capita
Increase $76,027[15] (9th)
GDP (nominal)2022 estimate
• Total
Increase $25.35 trillion[15] (1st)
• Per capita
Increase $76,027[15] (8th)
Gini (2020)Negative increase 48.5[16]
high inequality
HDI (2019)Increase 0.926[17]
very high (17th)
CurrencyU.S. dollar ($) (USD)
Time zoneUTC−4 to −12, +10, +11
• Summer (DST)
UTC−4 to −10[e]
Date formatmm/dd/yyyy[f]
Drives onright[g]
Calling code+1
ISO 3166 codeUS
  1. ^ 36 U.S.C. § 302
  2. ^ a b c "The Great Seal of the United States" (PDF). U.S. Department of State, Bureau of Public Affairs. 2003. Retrieved February 12, 2020.
  3. ^ An Act To make The Star-Spangled Banner the national anthem of the United States of America (H.R. 14). 71st United States Congress. March 3, 1931.
  4. ^ Cobarrubias 1983, p. 195.
  5. ^ García 2011, p. 167.
  6. ^ "2020 Census Illuminates Racial and Ethnic Composition of the Country". United States Census. Retrieved August 13, 2021.
  7. ^ "Race and Ethnicity in the United States: 2010 Census and 2020 Census". United States Census. Retrieved August 13, 2021.
  8. ^ "A Breakdown of 2020 Census Demographic Data". NPR. August 13, 2021.
  9. ^ "About Three-in-Ten U.S. Adults Are Now Religiously Unaffiliated". Measuring Religion in Pew Research Center's American Trends Panel. Pew Research Center. December 14, 2021. Retrieved December 21, 2021.
  10. ^ Compton's Pictured Encyclopedia and Fact-index: Ohio. 1963. p. 336.
  11. ^ "Surface water and surface water change". Organisation for Economic Co-operation and Development (OECD). 2015. Retrieved October 11, 2020.
  12. ^ Areas of the 50 states and the District of Columbia but not Puerto Rico nor other island territories per "State Area Measurements and Internal Point Coordinates". Census.gov. August 2010. Retrieved March 31, 2020. reflect base feature updates made in the MAF/TIGER database through August, 2010.
  13. ^ Bureau, US Census. "New Vintage 2021 Population Estimates Available for the Nation, States and Puerto Rico". Census.gov. {{cite web}}: |last= has generic name (help)
  14. ^ "Census Bureau's 2020 Population Count". United States Census. Retrieved April 26, 2021. The 2020 census is as of April 1, 2020.
  15. ^ a b c d "World Economic Outlook Database, April 2022". IMF.org. International Monetary Fund. April 2022. Retrieved April 19, 2022.
  16. ^ "Income inequality in America is the highest it's been since Census Bureau started tracking it, data shows". The Washington Post. Retrieved July 27, 2020.
  17. ^ "Human Development Report 2020: The Next Frontier: Human Development and the Anthropocene" (PDF). United Nations Development Programme. December 15, 2020. Retrieved December 15, 2020.


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