County · Illinois · United States
Madison County ZIP codes
28 ZIP codes · 27 cities · FIPS 17119
Key facts
- State
- Illinois (IL)
- FIPS code
- 17119
- Population
- 264,631
- Median household income
- $74,800
- Median age
- 40.2
- Land area
- 715.5 sq mi (1,853.1 km²)
- Population density
- 370 / sq mi
- Area codes
- 217, 309, 618, 730
Cities and ZIP codes in Madison County (27)
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.