County · Illinois · United States
Boone County ZIP codes
5 ZIP codes · 5 cities · FIPS 17007
Key facts
- State
- Illinois (IL)
- FIPS code
- 17007
- Population
- 53,316
- Median household income
- $81,638
- Median age
- 39.5
- Land area
- 280.7 sq mi (727.1 km²)
- Population density
- 190 / sq mi
- Area codes
- 779, 815
Cities and ZIP codes in Boone County (5)
| City | ZIP codes |
|---|---|
| Belvidere | 61008 |
| Caledonia | 61011 |
| Capron | 61012 |
| Garden Prairie | 61038 |
| Poplar Grove | 61065 |
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.