If available, see below for a list of known police frequencies for County in . Or, navigate to your city or town to view your local police frequencies.
|155.61||OBrien County Sheriff - Alternate||OBrien County Sheriff|
|155.91||OBrien County Sheriff - Alternate||OBrien County Sheriff|
|154.74||OBrien County Sheriff - Dispatch||OBrien County Sheriff|
|155.19||OBrien County Sheriff - TAC||OBrien County Sheriff|
Below is a list of cities located within County, . Click the link to your city or town to view any available police frequencies.