County ProfileIA
Mahaska County
Population: 22,190 · 9 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
22,190
People
Median age
39
Housing
Total households
8,743
Income
Median household income
$70,940
Housing
Total housing units
9,728
Employment
Employment rate
62.7%
Education
Bachelor’s degree or higher
24.1%
Healthcare
Insured population
95.3%
County details
Local time 02:17:19(CT)| Name | Mahaska |
|---|---|
| Total ZIP codes | 9total |
| ZIP codes (by type) | 8 Standard1 PO Box |
| Area code | 641 |
| Timezone | Central Time (CT) |
| Coordinates | 41.3307973, -92.6363661 |
| Land area | 570.9 sq miles(1,478.5 km²) |
Map of Mahaska county, Iowa with ZIP codes
Cities and Communities in Mahaska County
Compare the largest cities in Mahaska County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Oskaloosa | 11,558 | $64,004 | 1ZIPs |
| New Sharon | 1,262 | $48,750 | 1ZIPs |
| Fremont | 708 | $78,333 | 1ZIPs |
| University Park | 487 | $74,167 | 1ZIPs |
| Beacon | 445 | $55,625 | 1ZIPs |
| Cedar | 287 | — | 1ZIPs |
| Leighton | 158 | $66,389 | 1ZIPs |
| Rose Hill | 157 | $82,917 | 1ZIPs |
| Barnes City | 156 | $82,500 | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Mahaska County
Review the most populated postal areas across Mahaska County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS