City · Iowa · United States
Hamburg, IA — ZIP codes
1 ZIP code · Fremont County
- City
- Hamburg
- County
- Fremont
- State
- Iowa
- Country
- United States
- Postal code
- 51640Single source
- Coordinates
- 40.6149, -95.6258 View on OpenStreetMap
- Area code
- 712
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 51640 | Hamburg | 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). Last generated : 2026-08-21. Report an error.