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Welcome to Mahaska County ...

Time Zone: Mahaska County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.

The community of Oskaloosa is the Seat for Mahaska County.

Mahaska County was founded February 17, 1843.

From the Census Estimates for 2019, <1> Mahaska had a population of 22,095 people. This is a decrease of 1.4% since the last Census (which gave a population of 22,408 people in 2010).

At the time of the 2010 Census, Mahaska represented 0.74% of the total population of Iowa.

Below are some of the communities located in Mahaska County:

  • Barnes City
    (15 miles [24.1 km] to the northeast)
  • Beacon
    (3 miles [4.8 km] to the southwest)
    • Jump to our Gazetteer entry for Beacon
    • Beacon is located in Mahaska County (IA)
    • Population from the 2020 Census: 488 people
  • Fremont
    (13 miles [20.9 km] to the southeast)
    • Jump to our Gazetteer entry for Fremont
    • Fremont is located in Mahaska County (IA)
    • Population from the 2020 Census: 727 people
    • Jump to TripAdvisor's Tourism page for Fremont <2>
  • Keomah Village
    (5 miles [8 km] to the east)
    • Jump to our Gazetteer entry for Keomah Village
    • Keomah Village is located in Mahaska County (IA)
    • Population from the 2020 Census: 99 people
  • Leighton
    (7 miles [11.3 km] to the west)
  • New Sharon
    (10 miles [16.1 km] to the north)
  • Oskaloosa
    (Less than 2 miles to the south)
  • Rose Hill
    (9 miles [14.5 km] to the east)
    • Jump to our Gazetteer entry for Rose Hill
    • Rose Hill is located in Mahaska County (IA)
    • Population from the 2020 Census: 161 people
  • University Park
    (2 miles [3.2 km] to the southeast)
    • Jump to our Gazetteer entry for University Park
    • University Park is located in Mahaska County (IA)
    • Population from the 2020 Census: 468 people

Websites of Interest ...

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
 

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This page was last modified/updated: 13 Jul 2025