Aitkin County, Minnesota

Aitkin County
Location within the U.S. state of Minnesota
Minnesota's location within the U.S.
Coordinates: 46°37′N 93°25′W / 46.61°N 93.41°W / 46.61; -93.41
Country United States
State Minnesota
FoundedMay 23, 1857 (created)
June 30, 1871 (organized)
Named afterWilliam Alexander Aitken
SeatAitkin
Largest cityAitkin
Area
  Total
1,995 sq mi (5,170 km2)
  Land1,822 sq mi (4,720 km2)
  Water174 sq mi (450 km2)  8.7%
Population
 (2020)
  Total
15,697
  Estimate 
(2023)
16,102
  Density8.69/sq mi (3.36/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district8th
Websitewww.co.aitkin.mn.us

Aitkin County (/ˈkɪn/ AY-kin) is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 15,697. Its county seat is Aitkin. Part of the Mille Lacs Indian Reservation is in the county. The county was created in 1857 and organized in 1871.