City · Illinois · United States
Rock City, IL — ZIP codes
1 ZIP code · Stephenson County
- City
- Rock City
- County
- Stephenson
- State
- Illinois
- Country
- United States
- Postal code
- 61070Single source
- Coordinates
- 42.4103, -89.4759 View on OpenStreetMap
- Area code
- 815 (from the nearest rate centre)
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 61070 | Rock City | Single source |
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Last generated : 2026-08-21. Report an error.