ZIP CodesZIP codes in Whiteside County, Illinois
Whiteside County, Illinois has 12 ZIP codes in this list, from 61037 to 61283. They cover 12 places, among them Galt, Rock Falls, Sterling and Albany.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 61037 | Galt | 0.1 | 41.786, -89.761 |
| 61071 | Rock Falls | 72.5 | 41.767, -89.692 |
| 61081 | Sterling | 124 | 41.806, -89.705 |
| 61230 | Albany | 19.2 | 41.766, -90.208 |
| 61243 | Deer Grove | 25.7 | 41.632, -89.697 |
| 61250 | Erie | 87.2 | 41.656, -90.084 |
| 61251 | Fenton | 17.6 | 41.728, -90.046 |
| 61252 | Fulton | 58.7 | 41.852, -90.151 |
| 61261 | Lyndon | 16.6 | 41.720, -89.917 |
| 61270 | Morrison | 151 | 41.817, -89.969 |
| 61277 | Prophetstown | 134 | 41.631, -89.947 |
| 61283 | Tampico | 83.6 | 41.652, -89.795 |
The ZIP code areas of Whiteside County add up to about 790 square miles of land (2,046 sq km) as the Census Bureau draws them. The largest is 61270 (Morrison), with 151 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Galt, IL 61037.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.