This is the Defiance ZIP Code page. Defiance is a city name in Defiance, Iowa, United States. The city name is designated by USPS, it could be a city, town,village school name, etc.
| post code | city | state | latitude | longitude |
|---|---|---|---|---|
| 81601 | Defiance | IA | 39.541469 | -107.325945 |