County · Illinois · United States
Will County ZIP codes
31 ZIP codes · 24 cities · FIPS 17197
Key facts
- State
- Illinois (IL)
- FIPS code
- 17197
- Population
- 698,450
- Median household income
- $107,799
- Median age
- 38.9
- Land area
- 835.9 sq mi (2,164.9 km²)
- Population density
- 836 / sq mi
- Area codes
- 331, 464, 618, 630, 708, 779, 815
Cities and ZIP codes in Will County (24)
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.