County · Illinois · United States
Hamilton County ZIP codes
5 ZIP codes · 5 cities · FIPS 17065
Key facts
- State
- Illinois (IL)
- FIPS code
- 17065
- Population
- 7,972
- Median household income
- $61,520
- Median age
- 43.5
- Land area
- 434.6 sq mi (1,125.7 km²)
- Population density
- 18 / sq mi
- Area codes
- 618
Cities and ZIP codes in Hamilton County (5)
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.