County · Illinois · United States
Mason County ZIP codes
9 ZIP codes · 9 cities · FIPS 17125
Key facts
- State
- Illinois (IL)
- FIPS code
- 17125
- Population
- 12,878
- Median household income
- $62,127
- Median age
- 45.5
- Land area
- 539.3 sq mi (1,396.9 km²)
- Population density
- 24 / sq mi
- Area codes
- 217, 309, 447
Cities and ZIP codes in Mason County (9)
| City | ZIP codes |
|---|---|
| Bath | 62617 |
| Easton | 62633 |
| Forest City | 61532 |
| Havana | 62644 |
| Kilbourne | 62655 |
| Manito | 61546 |
| Mason City | 62664 |
| San Jose | 62682 |
| Topeka | 61567 |
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.