| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 51331 | Arnolds Park | Dickinson County | Standard |
| 51334 | Estherville | Emmet County | Standard |
| 51338 | Everly | Clay County | Standard |
| 51347 | Lake Park | Dickinson County | Standard |
| 51351 | Milford | Dickinson County | Standard |
| 51355 | Okoboji | Dickinson County | Standard |
| 51360 | Spirit Lake | Dickinson County | Standard |
| 51363 | Superior | Dickinson County | PO Box |
| 51364 | Terril | Dickinson County | Standard |