If available, see below for a list of known police frequencies for Crystal, North Dakota. Or, navigate to another city or town within Pembina County, to view the local police frequencies.
| Bathgate | Canton City | Cavalier | Crystal | |
| Drayton | Hamilton | Mountain | Neche | |
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| Pembina | St Thomas | Walhalla | ||
Detect police activity and stay ticket-free in Crystal, North Dakota with these police radar detectors.