Mahaska County, Iowa Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Oskaloosa111,41811,537-0.26%1,4188.1City
New Sharon21,2431,258-0.32%1,3240.9City
Fremont3681697-0.58%6411.1City
University Park4471486-0.84%6050.8City
Beacon5430434-0.23%5530.8City
Rose Hill6156160-0.64%1,0990.1City
Barnes City7150154-0.66%2550.6City
Leighton8148155-1.33%1,5910.1City
Keomah Village9108111-0.92%1,7140.1City

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Mahaska County, Iowa?

Oskaloosa is the largest city in Mahaska County.

What is the smallest city in Mahaska County, Iowa?

Keomah Village is the smallest city in Mahaska County.

How many cities are in Mahaska County?

There are 9 cities in Mahaska County, Iowa.

Frequently Asked Questions