ZIP CodesZIP codes in Dickinson County, Iowa
Dickinson County, Iowa has 7 ZIP codes in this list, from 51331 to 51364. They cover 7 places, among them Arnolds Park, Lake Park, Milford and Okoboji.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 51331 | Arnolds Park | 1.6 | 43.364, -95.128 |
| 51347 | Lake Park | 81.0 | 43.445, -95.322 |
| 51351 | Milford | 108 | 43.320, -95.162 |
| 51355 | Okoboji | 2.5 | 43.389, -95.137 |
| 51360 | Spirit Lake | 105 | 43.426, -95.112 |
| 51363 | Superior | 0.4 | 43.432, -94.947 |
| 51364 | Terril | 63.3 | 43.324, -94.974 |
The ZIP code areas of Dickinson County add up to about 362 square miles of land (938 sq km) as the Census Bureau draws them. The largest is 51351 (Milford), with 108 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Arnolds Park, IA 51331.
- 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.