Matanuska-Susitna Borough, Alaska

Matanuska-Susitna Borough
Ruth Glacier
Flag of Matanuska-Susitna Borough
Official seal of Matanuska-Susitna Borough
Map of Alaska highlighting Matanuska-Susitna Borough
Location within the U.S. state of Alaska
Map of the United States highlighting Alaska
Alaska's location within the U.S.
Coordinates: 62°24′N 149°35′W / 62.4°N 149.58°W / 62.4; -149.58
Country United States
State Alaska
IncorporatedJanuary 1, 1964[1][2]
Named forMatanuska River and Susitna River
SeatPalmer
Largest CDPKnik-Fairview
Area
 • Total
25,258 sq mi (65,420 km2)
 • Land24,608 sq mi (63,730 km2)
 • Water650 sq mi (1,700 km2)  2.6%
Population
 (2020)
 • Total
107,801
 • Estimate 
(2022)
113,325 Increase
 • Density4.3/sq mi (1.6/km2)
Time zoneUTC−9 (Alaska)
 • Summer (DST)UTC−8 (ADT)
Congressional districtAt-large
Websitewww.matsugov.us

Matanuska-Susitna Borough (often referred to as the Mat-Su Borough) is a borough located in the U.S. state of Alaska. Its borough seat is Palmer, and the largest community is the census-designated place of Knik-Fairview. As of the 2020 census, the borough's population was 107,801.[3]

The borough is part of the Anchorage Metropolitan Statistical Area, along with the municipality of Anchorage on its south.

The Mat-Su Borough is so designated because it contains the entire Matanuska and Susitna Rivers. They empty into Cook Inlet, which is the southern border of the Mat-Su Borough. It is one of the few agricultural areas of Alaska.

  1. ^ "History". Matanuska-Susitna Borough Joint Land Use Study. 2009. Archived from the original on March 6, 2012. Retrieved May 4, 2012.
  2. ^ 1996 Alaska Municipal Officials Directory. Juneau: Alaska Municipal League/Alaska Department of Community and Regional Affairs. January 1996. p. 12.
  3. ^ "State & County QuickFacts". United States Census Bureau. Retrieved April 13, 2023.