Monona County, Iowa ZIP Codes
- ZIP records
9 - Cities represented
9 - Sum of listed ZIP population estimates
8,715
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 | 51040 | Onawa | 3,500 |
| 2 | 51034 | Mapleton | 1,674 |
| 3 | 51063 | Whiting | 1,072 |
| 4 | 51060 | Ute | 706 |
| 5 | 51558 | Moorhead | 549 |
| 6 | 51010 | Castana | 425 |
| 7 | 51523 | Blencoe | 379 |
| 8 | 51572 | Soldier | 371 |
| 9 | 51051 | Rodney | 39 |
Cities in Monona 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.