County · Illinois · United States
Lee County ZIP codes
14 ZIP codes · 14 cities · FIPS 17103
Key facts
- State
- Illinois (IL)
- FIPS code
- 17103
- Population
- 34,058
- Median household income
- $68,459
- Median age
- 43
- Land area
- 724.8 sq mi (1,877.2 km²)
- Population density
- 47 / sq mi
- Area codes
- 779, 815
Cities and ZIP codes in Lee County (14)
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.