| | County | # of
Listings | Most
Recent
Report | Last
Posted | | McCone | | | |
| Meagher | 2 | 12-2012 | 12-2013 |
| Mineral | 2 | 4-2020 | 7-2020 |
| Missoula | 9 | 6-2018 | 10-2019 |
| Musselshell | | | |
| Park | 2 | 8-2001 | 8-2001 |
| Petroleum | | | |
| Phillips | 1 | 1-2011 | 2-2012 |
| Pondera | | | |
| Powder River | | | |
| Powell | | | |
| Prairie | | | |
| Ravalli | 2 | 9-2005 | 6-2009 |
| Richland | 1 | 12-1979 | 7-1999 |
| Roosevelt | 2 | 10-1984 | 1-1998 |
| Rosebud | | | |
| Sanders | 2 | 12-2017 | 10-2019 |
| Sheridan | | | |
| Silver Bow | 2 | 8-2007 | 6-2009 |
| Stillwater | 1 | 12-1971 | 1-2019 |
| Sweet Grass | | | |
| Teton | | | |
| Toole | | | |
| Treasure | | | |
| Valley | | | |
| Wheatland | | | |
| Wibaux | | | |
| Yellowstone | | | |
|
