If available, see below for a list of known police frequencies for Union County in South Dakota. Or, navigate to your city or town to view your local city and/or police frequencies within Union County, South Dakota.
| Alcester | Beresford | Dakota Dunes | Elk Point | |
|
| ||||
| Jefferson | North Sioux City | Richland | ||
Detect police activity and stay ticket-free in Union County with these police radar detectors.