County · Illinois · United States
Richland County ZIP codes
6 ZIP codes · 6 cities · FIPS 17159
Key facts
- State
- Illinois (IL)
- FIPS code
- 17159
- Population
- 15,675
- Median household income
- $60,404
- Median age
- 42.5
- Land area
- 360 sq mi (932.5 km²)
- Population density
- 44 / sq mi
- Area codes
- 618, 730
Cities and ZIP codes in Richland County (6)
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.