ZIP Code 50661 is located in North Washington Iowa. 50661 is entirely within Chickasaw County. Regionally, it is located in the Cedar Rapids-Waterloo-Iowa City and Dubuque Area.
| ZIP Code Name | North Washington |
| Primary County | Chickasaw County |
| ZIP Code Type | PO Box |
| Current Time | CDT |
| Coordinates | 43.08404922,-92.35756683 |
| Adjacent ZIP Codes | |
| Region | Cedar Rapids-Waterloo-Iowa City and Dubuque Area |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |