Mason County, Illinois
8 ZIP codes · 539.35 sq mi of land · FIPS 17125
| Population | 12,745 |
|---|---|
| State | Illinois |
| FIPS code | 17125 |
| Time zone | Central |
| Land area | 539.35 sq mi |
| Center (lat, long) | 40.2370, -89.9136 |
Area codes in this area
These are the area codes that most often serve Mason County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
Forest CityTopekaBathEastonHavanaKilbourneMason CitySan Jose
ZIP codes in Mason County
61532 Forest City61567 Topeka62617 Bath62633 Easton62644 Havana62655 Kilbourne62664 Mason City62682 San Jose
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.