Postal reference
ZIP 51003, Iowa
ZIP code 51003 is associated with Alton in Iowa in the GeoNames postal reference.
Reference details
- State
- Iowa (IA)
- ZIP code
- 51003
- Associated localities
- Alton
- County names in postal records
- Sioux
- Approximate postal point
- 42.9782, -96.0173
View point on map ↗
Postal information is adapted from GeoNames, CC BY 4.0. Locality associations and coordinates are approximate, not ZIP boundaries or a guarantee of current mail delivery.