7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 62441 | Marshall | 7,003 |
| 62420 | Casey | 4,299 |
| 62442 | Martinsville | 2,671 |
| 62474 | Westfield | 626 |
| 62423 | Dennison | 546 |
| 62477 | West Union | 526 |
| 62478 | West York | 333 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Clark County, Illinois (US Census).