Whiteside County, Illinois
12 ZIP codes · 684.1 sq mi of land · FIPS 17195
| Population | 54,947 |
|---|---|
| State | Illinois |
| FIPS code | 17195 |
| Time zone | Central |
| Land area | 684.1 sq mi |
| Center (lat, long) | 41.7507, -89.9110 |
Area codes in this area
These are the area codes that most often serve Whiteside County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
ZIP codes in Whiteside County
61037 Galt61071 Rock Falls61081 Sterling61230 Albany61243 Deer Grove61250 Erie61251 Fenton61252 Fulton61261 Lyndon61270 Morrison61277 Prophetstown61283 Tampico
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.