| Police department | County |
|---|---|
| Baker Police Department | Fallon |
| Belgrade Police Department | Gallatin |
| Billings Police Department | Yellowstone |
| Bozeman Police Department | Gallatin |
| Bridger Police Department | Carbon |
| Chinook Police Department | Blaine |
| Colstrip Police Department | Rosebud |
| Columbia Falls Police Department | Flathead |
| Columbus Police Department | Stillwater |
| Conrad Police Department | Pondera |
| Cut Bank Police Department | Glacier |
| Darby Police Department | Ravalli |
| Deer Lodge Police Department | Powell |
| Dillon Police Department | Beaverhead |
| East Helena Police Department | Lewis And Clark |
| Eureka Police Department | Lincoln |
| Fairview Police Department | Richland |
| Glasgow Police Department | Valley |
| Glendive Police Department | Dawson |
| Great Falls Police Department | Cascade |
| Hamilton Police Department | Ravalli |
| Hardin Police Department | Big Horn |
| Havre Police Department | Hill |
| Helena Police Department | Lewis And Clark |
| Hot Springs Police Department | Sanders |
| Kalispell Police Department | Flathead |
| Laurel Police Department | Yellowstone |
| Lewistown Police Department | Fergus |
| Libby Police Department | Lincoln |
| Livingston Police Department | Park |
| Manhattan Police Department | Gallatin |
| Miles City Police Department | Custer |
| Missoula Police Department | Missoula |
| Plains Police Department | Sanders |
| Polson Police Department | Lake |
| Red Lodge Police Department | Carbon |
| Ronan Police Department | Lake |
| Sidney Police Department | Richland |
| St. Ignatius Police Department | Lake |
| Stevensville Police Department | Ravalli |
| Thompson Falls Police Department | Sanders |
| Troy Police Department | Lincoln |
| West Yellowstone Police Department | Gallatin |
| Whitefish Police Department | Flathead |
| Wolf Point Police Department | Roosevelt |
Alphabetical.
Source: Federal Bureau of Investigation, Crime Data Explorer — law-enforcement agencies by state (API). Data captured September 30, 2026.