| Localité | Code postal |
|---|---|
| Bluffton, Winneshiek | 52101 |
| Burr Oak, Winneshiek | 52101 |
| Calmar, Winneshiek | 52132 |
| Castalia, Winneshiek | 52133 |
| Conover, Winneshiek | 52132 |
| Cresco, Winneshiek | 52136 |
| Decorah, Winneshiek | 52101 |
| Festina, Winneshiek | 52144 |
| Fort Atkinson, Winneshiek | 52144 |
| Freeport, Winneshiek | 52101 |
| Hesper, Winneshiek | 52101 |
| Highlandville, Winneshiek | 52149 |
| Jackson Junction, Winneshiek | 52171 |
| Locust, Winneshiek | 52101 |
| Nordness, Winneshiek | 52101 |
| Ossian, Winneshiek | 52161 |
| Postville, Winneshiek | 52162 |
| Quandahl, Winneshiek | 52101 |
| Ridgeway, Winneshiek | 52165 |
| Sattre, Winneshiek | 52101 |
| Spillville, Winneshiek | 52168 |
| Waucoma, Winneshiek | 52171 |