If available, see below for a list of known police frequencies for Washington County in Wisconsin. Or, navigate to your city or town to view your local city and/or police frequencies within Washington County, Wisconsin.
| Addison | Barton | Erin | Farmington | |
| Germantown | Hartford | Jackson | Kewaskum | |
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| Milwaukee | Newburg | Polk | Richfield | |
| Slinger | Trenton | Wayne | West Bend | |
Detect police activity and stay ticket-free in Washington County with these police radar detectors.