Mason County, Illinois ZIP Codes
- ZIP records
8 - Cities represented
8 - Sum of listed ZIP population estimates
10,735
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 | 62644 | Havana | 4,615 |
| 2 | 62664 | Mason City | 2,922 |
| 3 | 62682 | San Jose | 684 |
| 4 | 62633 | Easton | 638 |
| 5 | 62655 | Kilbourne | 594 |
| 6 | 62617 | Bath | 524 |
| 7 | 61567 | Topeka | 411 |
| 8 | 61532 | Forest City | 347 |
Cities in Mason County
ZIP Directory
Browse all ZIP data for Illinois
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.