ZIP CodesZIP codes in Keokuk County, Iowa
Keokuk County, Iowa has 15 ZIP codes in this list, from 50104 to 52591. They cover 15 places, among them Gibson, Keswick, Thornburg and What Cheer.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 50104 | Gibson | 15.1 | 41.487, -92.387 |
| 50136 | Keswick | 39.8 | 41.461, -92.240 |
| 50255 | Thornburg | 0.2 | 41.455, -92.336 |
| 50268 | What Cheer | 46.6 | 41.395, -92.355 |
| 52231 | Harper | 34.5 | 41.373, -92.039 |
| 52248 | Keota | 112 | 41.350, -91.964 |
| 52335 | South English | 48.2 | 41.453, -92.068 |
| 52355 | Webster | 35.5 | 41.436, -92.177 |
| 52550 | Delta | 38.1 | 41.317, -92.336 |
| 52562 | Hayesville | 0.2 | 41.336, -92.178 |
| 52563 | Hedrick | 108 | 41.183, -92.310 |
| 52568 | Martinsburg | 0.3 | 41.195, -92.272 |
| 52576 | Ollie | 46.9 | 41.200, -92.135 |
| 52585 | Richland | 54.5 | 41.194, -91.974 |
| 52591 | Sigourney | 124 | 41.330, -92.202 |
The ZIP code areas of Keokuk County add up to about 704 square miles of land (1,824 sq km) as the Census Bureau draws them. The largest is 52591 (Sigourney), with 124 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Gibson, IA 50104.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.