ZIP Code 51231
Archer · O'Brien, Iowa
51231 is the ZIP code of Archer in O'Brien, Iowa, United States.
- ZIP Code
- 51231
- County
- O'Brien
- State
- Iowa
- Country
- United States
Place with ZIP code 51231
| Place | County | Location |
|---|---|---|
| Archer | O'Brien | 43.118, -95.742 |
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 51231?
Archer.
Which county and state is 51231 in?
O'Brien, Iowa, United States.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.