If available, see below for a list of known police frequencies for Northumberland County in Pennsylvania. Or, navigate to your city or town to view your local city and/or police frequencies within Northumberland County, Pennsylvania.
| Herndon | Kulpmont | Marion Heights | McEwensville | |
| Milton | Mount Carmel | Northumberland | Riverside | |
|
| ||||
| Shamokin | Snydertown | Sunbury | Turbotville | |
| Watsontown | ||||
Detect police activity and stay ticket-free in Northumberland County with these police radar detectors.