Clark County, Illinois ZIP Codes
- ZIP records
7 - Cities represented
7 - Sum of listed ZIP population estimates
16,004
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 62441 | Marshall | 7,003 |
| 2 | 62420 | Casey | 4,299 |
| 3 | 62442 | Martinsville | 2,671 |
| 4 | 62474 | Westfield | 626 |
| 5 | 62423 | Dennison | 546 |
| 6 | 62477 | West Union | 526 |
| 7 | 62478 | West York | 333 |
Cities in Clark County
ZIP Directory
Browse all ZIP data for Illinois
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.