Chickasaw County, Iowa ZIP Codes
- ZIP records
6 - Cities represented
6 - Sum of listed ZIP population estimates
11,850
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 | 50659 | New Hampton | 5,688 |
| 2 | 50658 | Nashua | 2,450 |
| 3 | 50630 | Fredericksburg | 1,372 |
| 4 | 50645 | Ionia | 1,193 |
| 5 | 52154 | Lawler | 592 |
| 6 | 50603 | Alta Vista | 555 |
Cities in Chickasaw 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.