Mahaska County, Iowa
Mahaska County: county in Iowa, United States
About
Mahaska County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 22,381 and a population density of 15 people per km². After 10 years in 2020 county had an estimated population of 22,370 inhabitants. Its county seat is Oskaloosa. The county was created 183 years ago in 1843.
County Snapshot
Mahaska County at a glance
Mahaska County currently has 9 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
9
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Iowa counties
99
Open related pagesLargest city
OskaloosaPopulation 11,803
Top linked places
Quick Facts about Mahaska County
| Population | 22,370 (2020) |
| Country | United States of America |
| State | Iowa (United States) |
| Area | 1485 km2 |
| Water as percent of area | 0.4% |
| Land as percent of area | 99.6% |
| Latitude & Longitude | 41.3352,-92.6409 |
| Named for | Chief Mahaska |
| Altitude | 810 feet / 247 meters |
| Capital | Oskaloosa |
| Establishment | February 17, 1843 |
| Time Zone | America/Chicago |
| Local time | 23:37:35 (15th April 2026) |
| Density | 15 Pop. per km² as of 2020 |
| Population growth | -0.05% (2010-2020) |
| Weather | 71℉ Rain Showers Likely 7-days weather |
Geography
Mahaska County is located at 41°20'7"N 92°38'27"W (41.3352000, -92.6409100). It has 6 neighbors: Jasper County, Keokuk County, Marion County, Monroe County, Poweshiek County and Wapello County.
Mahaska County map
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The largest city of Mahaska County is Oskaloosa with a population of 11,803. Other cities include, New Sharon population 1,286, Fremont population 727, Beacon population 488 and University Park population 468. See all Mahaska County cities & populated places.
Mahaska County Populated Places
Cities, towns, neighborhoods & other populated places in Mahaska County.
| City Name | Population | Title |
|---|---|---|
| Oskaloosa | 11,803 | City in and the county seat of Mahaska County, Iowa, United States |
| New Sharon | 1,286 | Human settlement in Mahaska County, Iowa, United States of America |
| Fremont | 727 | City in Mahaska County, Iowa, United States |
| Beacon | 488 | Human settlement in Mahaska County, Iowa, United States of America |
| University Park | 468 | City in Mahaska County, Iowa, United States |
| Barnes City | 169 | Human settlement in Iowa, United States of America |
| Rose Hill | 161 | City in Mahaska County, Iowa, United States |
| Leighton | 155 | City in Iowa |
| Keomah Village | 99 | Human settlement in Mahaska County, Iowa, United States of America |
Weather
Rain showers likely. Partly sunny, with a high near 71. Chance of precipitation is 60%.
7-Day ForecastOfficial website of Mahaska County
Official Website- Oskaloosa
Demographics
According to census records, the population of Mahaska County decreased by 0.05% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 22,381 | - | census |
| 2011 | 22,501 | 0.53% | estimation process |
| 2012 | 22,398 | -0.46% | estimation process |
| 2013 | 22,421 | 0.1% | estimation process |
| 2014 | 22,363 | -0.26% | estimation process |
| 2015 | 22,312 | -0.23% | estimation process |
| 2016 | 22,186 | -0.57% | estimation process |
| 2017 | 22,211 | 0.11% | estimation process |
| 2018 | 22,018 | -0.88% | estimation process |
| 2019 | 22,095 | 0.35% | estimation process |
| 2020 | 22,370 | 1.23% | estimation process |
People born in Mahaska County (3)
People born in Mahaska County, including U.S. Representative from South Dakota William Williamson, Daniel Frank Craig, Dustin Hite, .
More notable people
Iowa Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Indiana | 820,445 | A city located in the state of Iowa. |
| Polk County | 494,281 | County in Iowa, United States |
| Linn County | 227,854 | County in Oregon, United States |
| Des Moines | 212,312 | The capital of Iowa. |
| Scott County | 173,216 | County in Tennessee, United States |
| Johnson County | 153,740 | County in Iowa, United States |
| Cedar Rapids | 134,027 | The second most populous city in Iowa. |
| Black Hawk County | 130,786 | County in Iowa, United States |
| Woodbury County | 103,138 | County in Iowa, United States of America |
| Davenport | 101,799 | The most populous city in Scott County, Iowa. |
| Story County | 98,237 | County in Iowa, United States |
| Dubuque County | 97,590 | County in Iowa, United States |
| Dallas County | 96,963 | County in Iowa, United States |
| Pottawattamie County | 93,328 | County in Iowa, United States of America |
| Sioux City | 82,651 | The second most populous city in Iowa. |
| Iowa City | 75,130 | The most populous city in Johnson County, Iowa. |