7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 62441 | Marshall | 6,841 |
| 62420 | Casey | 4,361 |
| 62442 | Martinsville | 2,629 |
| 62477 | West Union | 755 |
| 62474 | Westfield | 651 |
| 62423 | Dennison | 609 |
| 62478 | West York | 308 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Clark County, Illinois (US Census).