Warren County, Illinois ZIP Codes
- ZIP records
8 - Cities represented
8 - Sum of listed ZIP population estimates
14,945
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 | 61462 | Monmouth | 10,458 |
| 2 | 61473 | Roseville | 1,279 |
| 3 | 61447 | Kirkwood | 1,020 |
| 4 | 61453 | Little York | 677 |
| 5 | 61423 | Cameron | 638 |
| 6 | 61478 | Smithshire | 420 |
| 7 | 61435 | Gerlaw | 271 |
| 8 | 61417 | Berwick | 182 |
Cities in Warren 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.