Petersburg Borough, Alaska

Petersburg Borough is a borough in the U.S. state of Alaska. According to Census Bureau estimates, the population was 3,266 in 2019.[2] The borough seat is Petersburg.[3] Petersburg is the most recently created county equivalent in the United States.[4]

Petersburg Borough
Five Finger Islands Light
Map of Alaska highlighting Petersburg Borough
Location within the U.S. state of Alaska
Map of the United States highlighting Alaska
Alaska's location within the U.S.
Coordinates: 56°48′16″N 132°56′31″W / 56.8044°N 132.9419°W / 56.8044; -132.9419
Country United States
State Alaska
IncorporatedJanuary 3, 2013[1]
Named forPetersburg
Largest cityPetersburg
 • Total3,829 sq mi (9,920 km2)
 • Total3,815
 • Estimate 
 • Density1.00/sq mi (0.38/km2)
Time zoneUTC−9 (Alaska)
 • Summer (DST)UTC−8 (ADT)
Congressional districtAt-large


When the borough incorporated in 2013, it took area from the Hoonah-Angoon Census Area and the former Petersburg Census Area. The remaining portion of Petersburg Census Area (including Kake) was added to Prince of Wales-Hyder Census Area. Petersburg Census Area was created in 2008 from the remaining portion of Wrangell-Petersburg Census Area upon the incorporation of the City and Borough of Wrangell.[5]


Located in central Southeast Alaska, the Petersburg Borough encompasses approximately 3,829 square miles (2,921 square miles of land, 908 square miles of water).

Adjacent boroughs and census areaEdit



Census-designated placesEdit

See alsoEdit


  1. ^ "Vote certified, Petersburg Borough formation complete". KTOO. January 4, 2013. Retrieved July 23, 2013.
  2. ^ "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2018". Archived from the original on February 13, 2020. Retrieved May 13, 2019.
  3. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.
  4. ^ "Substantial Changes to Counties and County Equivalent Entities: 1970-Present". United States Census Bureau.
  5. ^ U.S. Geological Survey Geographic Names Information System: Petersburg Borough, Alaska, U.S. Geological Survey Geographic Names Information System: Wrangell City and Borough
  6. ^ Juneau Empire, 28 October 2012, Juneau appeals Petersburg Borough boundary approval – Includes map.

External linksEdit

Coordinates: 56°37′00″N 133°21′00″W / 56.6167°N 133.3500°W / 56.6167; -133.3500