ZIP CodesZIP codes in Fremont County, Iowa
Fremont County, Iowa has 9 ZIP codes in this list, from 51639 to 51654. They cover 9 places, among them Farragut, Hamburg, Imogene and Percival.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 51639 | Farragut | 68.3 | 40.721, -95.478 |
| 51640 | Hamburg | 115 | 40.615, -95.626 |
| 51645 | Imogene | 45.1 | 40.863, -95.436 |
| 51648 | Percival | 57.2 | 40.740, -95.809 |
| 51649 | Randolph | 42.1 | 40.870, -95.562 |
| 51650 | Riverton | 31.3 | 40.663, -95.577 |
| 51652 | Sidney | 74.4 | 40.751, -95.640 |
| 51653 | Tabor | 35.1 | 40.900, -95.673 |
| 51654 | Thurman | 46.4 | 40.842, -95.760 |
The ZIP code areas of Fremont County add up to about 515 square miles of land (1,335 sq km) as the Census Bureau draws them. The largest is 51640 (Hamburg), with 115 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Farragut, IA 51639.
- 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.