If available, see below for a list of known police frequencies for Johnson County in Iowa. Or, navigate to your city or town to view your local city and/or police frequencies within Johnson County, Iowa.
| Coralville | Hills | Iowa City | Lone Tree | |
| North Liberty | Oxford | Shueyville | Solon | |
|
| ||||
| Swisher | Tiffin | University Heights | ||
Detect police activity and stay ticket-free in Johnson County with these police radar detectors.