Mahaska County, Iowa
Mahaska County is a county in Iowa. Its county FIPS code is 19123. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 19123
- Representative coordinates
- 41.330797, -92.636366
- County type
- County
- County seat or government
- Oskaloosa
- Resident population, July 2025
- 21,880
- Land area
- 1,478.497 km²
- Water area
- 6.594 km²
- State
- Iowa
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Mahaska County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
50027 · 50044 · 50104 · 50143 · 50153 · 50171 · 50207 · 50219 · 50251 · 50256 · 50268 · 52501 · 52534 · 52543 · 52550 · 52553 · 52561 · 52577 · 52586 · 52595
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Mahaska County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.