Richland County, Illinois
6 ZIP codes · 360.03 sq mi of land · FIPS 17159
| Population | 15,598 |
|---|---|
| State | Illinois |
| FIPS code | 17159 |
| Time zone | Central |
| Land area | 360.03 sq mi |
| Center (lat, long) | 38.7122, -88.0855 |
Area codes in this area
These are the area codes that most often serve Richland 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)
CalhounClaremontDundasOlneyParkersburgNoble
ZIP codes in Richland County
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.