Washington County, Wisconsin Zip Codes
| West Bend | 27,641 |
| Hartford | 23,394 |
| West Bend | 21,764 |
| Germantown | 19,903 |
| Jackson | 10,005 |
| Slinger | 9,100 |
| Kewaskum | 8,146 |
| Hubertus | 5,994 |
| Colgate | 5,369 |
| Richfield | 3,342 |
| Allenton | 2,389 |
- Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.