Clark County, Illinois
7 ZIP codes · 501.39 sq mi of land · FIPS 17023
| Population | 15,266 |
|---|---|
| State | Illinois |
| FIPS code | 17023 |
| Time zone | Central |
| Land area | 501.39 sq mi |
| Center (lat, long) | 39.3323, -87.7917 |
Area codes in this area
These are the area codes that most often serve Clark 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)
CaseyDennisonMarshallMartinsvilleWestfieldWest UnionWest York
ZIP codes in Clark County
62420 Casey62423 Dennison62441 Marshall62442 Martinsville62474 Westfield62477 West Union62478 West York
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.