If available, see below for a list of known police frequencies for Jansen, Nebraska. Or, navigate to another city or town within Jefferson County, to view the local police frequencies.
| Daykin | Diller | Endicott | Fairbury | |
| Gladstone | Harbine | Helvey | Jansen | |
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| Plymouth | Powell | Reynolds | Steele City | |
| Thompson | ||||
Detect police activity and stay ticket-free in Jansen, Nebraska with these police radar detectors.