Mahaska County, Iowa ZIP Codes
- ZIP records
9 - Cities represented
9 - Sum of listed ZIP population estimates
20,715
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 52577 | Oskaloosa | 14,585 |
| 2 | 50207 | New Sharon | 2,325 |
| 3 | 52561 | Fremont | 1,112 |
| 4 | 52586 | Rose Hill | 600 |
| 5 | 52595 | University Park | 545 |
| 6 | 52543 | Cedar | 541 |
| 7 | 50143 | Leighton | 538 |
| 8 | 52534 | Beacon | 321 |
| 9 | 50027 | Barnes City | 148 |
Cities in Mahaska County
ZIP Directory
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.