Poweshiek County, Iowa ZIP Codes
- ZIP records
8 - Cities represented
8 - Sum of listed ZIP population estimates
19,220
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 | 50112 | Grinnell | 11,862 |
| 2 | 52211 | Brooklyn | 2,795 |
| 3 | 50171 | Montezuma | 2,524 |
| 4 | 52222 | Deep River | 631 |
| 5 | 50157 | Malcom | 473 |
| 6 | 52221 | Guernsey | 332 |
| 7 | 50242 | Searsboro | 326 |
| 8 | 52232 | Hartwick | 277 |
Cities in Poweshiek 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.