Oskaloosa, Iowa

Oskaloosa, Iowa
Nickname: 
Osky
Motto: 
"Note the Difference"
Location of Oskaloosa, Iowa
Oskaloosa
Location in the United States
Oskaloosa
Oskaloosa (the United States)
Coordinates: 41°17′31″N 92°38′25″W / 41.29194°N 92.64028°W / 41.29194; -92.64028
Country United States
State Iowa
CountyMahaska
IncorporatedFebruary 4, 1875
Area
 • Total
8.03 sq mi (20.81 km2)
 • Land8.02 sq mi (20.77 km2)
 • Water0.015 sq mi (0.04 km2)
Elevation
846 ft (258 m)
Population
 (2020)
 • Total
11,558
 • Density1,441.0/sq mi (556.38/km2)
Time zoneUTC-6 (Central (CST))
 • Summer (DST)UTC-5 (CDT)
ZIP code
52577
Area code641
FIPS code19-59925
GNIS feature ID468480
Websitewww.oskaloosaiowa.org

Oskaloosa is a city in, and the county seat of, Mahaska County, Iowa. The population was 11,558 in the 2020 U.S. census. In the late nineteenth and early twentieth century, Oskaloosa was a national center of bituminous coal mining. Today, Oskaloosa is home to William Penn University, a private university, and Lake Keomah State Park which is located four miles east of the city.