Cass County, Illinois
6 ZIP codes · 375.75 sq mi of land · FIPS 17017
| Population | 12,784 |
|---|---|
| State | Illinois |
| FIPS code | 17017 |
| Time zone | Central |
| Land area | 375.75 sq mi |
| Center (lat, long) | 39.9692, -90.2457 |
Area codes in this area
These are the area codes that most often serve Cass 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)
ArenzvilleAshlandBeardstownBluff SpringsChandlervilleVirginia
ZIP codes in Cass County
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.