If available, see below for a list of known police frequencies for Johnson County in Illinois. Or, navigate to your city or town to view your local police frequencies.
|151.235||Johnson County Sheriff - Dispatch||Johnson County Sheriff|
|155.535||Johnson County Sheriff - Dispatch||Johnson County Sheriff|
|155.58||Johnson County Sheriff - TAC||Johnson County Sheriff|
Below is a list of cities located within Johnson County, Illinois. Click the link to your city or town to view any available police frequencies.