Cerro Gordo County, Iowa ZIP Codes
- ZIP records
9 - Cities represented
9 - Sum of listed ZIP population estimates
41,868
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 | 50401 | Mason City | 28,703 |
| 2 | 50428 | Clear Lake | 9,071 |
| 3 | 50469 | Rockwell | 1,527 |
| 4 | 50482 | Ventura | 748 |
| 5 | 50464 | Plymouth | 694 |
| 6 | 50479 | Thornton | 655 |
| 7 | 50477 | Swaledale | 250 |
| 8 | 50433 | Dougherty | 157 |
| 9 | 50467 | Rock Falls | 63 |
Cities in Cerro Gordo 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.