Postal reference / United States
51591Red Oak, Iowa
ZIP code 51591 is a United States postal code for Red Oak, Iowa. Its county association is Montgomery County. The map reference point is at 41.0303, -95.1562.
- State / territory
- Iowa
- Recorded place name
- Red Oak
- County association
- Montgomery
- Estimated coordinate
- 41.0303, -95.1562
View on OpenStreetMap - ZIP prefix
- 515 · 57 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
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Iowa directoryOther ZIP codes in Red Oak, IA
Red Oak has 2 ZIP codes in the reference dataset.
- 51566Montgomery
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 51566 | Red Oak | IA | Montgomery | 4.0 |
| 51573 | Stanton | IA | Montgomery | 4.3 |
| 51532 | Elliott | IA | Montgomery | 6.9 |
| 50864 | Villisca | IA | Montgomery | 11.0 |
| 50847 | Grant | IA | Montgomery | 11.9 |
| 51533 | Emerson | IA | Mills | 13.3 |
| 51535 | Griswold | IA | Cass | 14.2 |
| 51638 | Essex | IA | Page | 14.8 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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