ZIP Code 51003 – Alton, Iowa
The 51003 ZIP Code belongs to Alton, Iowa. The population in this 51003 ZIP code is 1,815. The latitude is 42.98355 and longitude is -95.98642 in 51003 Alton, Iowa. The time zone for this 51003 ZIP code is America/Chicago.
| City | Alton |
| Zip Code | 51003 |
| State | Iowa |
| County | Sioux |
| Population | 1,815 |
| Latitude | 42.98355 |
| Longitude | -95.98642 |
| Time Zone | America/Chicago |