Mahaska County
Also known as Mahaska County, Iowa, Mahaska County, IA
county in Iowa, United States
Key facts
- Country
- United States
- State
- Iowa
- Founded
- February 17, 1843
- Named after
- Chief Mahaska
- Seat
- Oskaloosa
- Largest city
- Oskaloosa
- Total
- 573 sq mi (1,480 km )
- Land
- 571 sq mi (1,480 km )
- Water
- 2.5 sq mi (6.5 km ) 0.4%
- Estimate 2025
- 21,880
- Density
- 38.9/sq mi (15.0/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
~6 min read
Article
Mahaska County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 22,190. The county seat is Oskaloosa.
Mahaska County comprises the Oskaloosa, IA Micropolitan Statistical Area.