County · Illinois · United States
Warren County ZIP codes
8 ZIP codes · 8 cities · FIPS 17187
Key facts
- State
- Illinois (IL)
- FIPS code
- 17187
- Population
- 16,576
- Median household income
- $64,650
- Median age
- 38.7
- Land area
- 542.4 sq mi (1,404.8 km²)
- Population density
- 31 / sq mi
- Area codes
- 309
Cities and ZIP codes in Warren County (8)
| City | ZIP codes |
|---|---|
| Berwick | 61417 |
| Cameron | 61423 |
| Gerlaw | 61435 |
| Kirkwood | 61447 |
| Little York | 61453 |
| Monmouth | 61462 |
| Roseville | 61473 |
| Smithshire | 61478 |
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.