| Staff | Title | Departments | Phone |
|---|
| O'Brien, Gary | Captain | Fire | |
| Officer, 191 | Parking Enforcement Officer I | Parking | (406) 582-2232 |
| Officer, 193 | Parking Enforcement Officer I | Parking | (406) 582-2017 |
| Officer, 194 | Parking Enforcement Officer I | Parking | (406) 582-2039 |
| Officer, 197 | Parking Enforcement Officer I | Parking | (406) 582-2231 |
| Okray , Cody | Firefighter | Fire | |
| Oliver, Adam | Stormwater Program Manager | Stormwater | (406) 582-2916 |
| Olrogg, Garrett | WTP Operator | Water%20Treatment | |
| Otis, Emily | Librarian I- Youth Services | Library | |
| O'Tool, Tim | Engineer | Fire | |
| Overton, Mitch | Director | Cemetery%2C%20Forestry%2C%20Parks%20and%20Recreation%2C%20Recreation | (406) 582-3222 |
| Owens , Clay | Firefighter | Fire | |
