Zip code 51591: Red Oak, Iowa
This zip has no delivery boundary. The map shows its post office location and nearby zip codes.
About 51591
51591 is a non-residential zip code for Red Oak, Iowa (Montgomery County). It has no delivery area of its own, so the Census Bureau doesn't publish population or housing figures for it. Codes like this are usually assigned to post office boxes, or to a single organization such as a university, hospital, government agency or large company that gets enough mail to need its own zip code.
For a picture of the people who live around 51591, see the residential zip codes in the nearby list below.
Geography
- City (USPS)
- Red Oak
- State
- Iowa
- County
- Montgomery County
- Center point
- 41.0303° N, 95.1562° W
- Time zone
- Central Time (UTC-6, UTC-5 in summer)
- Zip type
- PO box or unique zip
Zip codes near 51591
| Zip | City | Distance | IncomeMedian income |
|---|---|---|---|
| 51566 | Red Oak, IA | 4 mi | $56,637 |
| 51573 | Stanton, IA | 4.8 mi | $86,438 |
| 51532 | Elliott, IA | 7.8 mi | $65,375 |
| 50864 | Villisca, IA | 10 mi | $69,861 |
| 51533 | Emerson, IA | 12 mi | $68,750 |
| 50847 | Grant, IA | 12 mi | $68,125 |
| 51535 | Griswold, IA | 14 mi | $76,371 |
| 51638 | Essex, IA | 15 mi | $59,107 |
| 51541 | Henderson, IA | 16 mi | $91,875 |
| 50857 | Nodaway, IA | 16 mi | $63,500 |
| 51645 | Imogene, IA | 17 mi | $217,898 |
| 50839 | Carbon, IA | 18 mi | $48,750 |
Questions about 51591
What city is zip code 51591?
51591 is assigned to Red Oak, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.
What county is 51591 in?
51591 is in Montgomery County, Iowa.
What time zone is 51591 in?
51591 is in Central Time.
What zip codes are near 51591?
The closest zip codes to 51591 are 51566, 51573, 51532, 50864, 51533.
Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 51591, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.