If available, see below for a list of known police frequencies for Polk County in Minnesota. Or, navigate to your city or town to view your local city and/or police frequencies within Polk County, Minnesota.
| Beltrami | Climax | Crookston | East Grand Forks | |
| Erskine | Fertile | Fisher | Fosston | |
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| Gully | Lengby | McIntosh | Mentor | |
| Nielsville | Trail | Winger | ||
Detect police activity and stay ticket-free in Polk County with these police radar detectors.