If available, see below for a list of known police frequencies for Onarga, Illinois. Or, navigate to another city or town within Iroquois County, to view the local police frequencies.
| Ashkum | Beaverville | Buckley | Chebanse | |
| Cissna Park | Clifton | Crescent City | Danforth | |
| Donovan | Gilman | Iroquois | Loda | |
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| Martinton | Milford | Onarga | Papineau | |
| Sheldon | Thawville | Watseka | Wellington | |
| Woodland | ||||
Detect police activity and stay ticket-free in Onarga, Illinois with these police radar detectors.