• Beaverhead
• Big Horn
• Blaine
• Broadwater
• Carbon
• Carter
• Cascade
• Chouteau
• Custer
• Daniels
• Dawson
• Deer Lodge
• Fallon
• Fergus
• Flathead
• Gallatin
• Garfield
• Glacier
• Golden Valley
• Granite
• Hill
• Jefferson
• Judith Basin
• Lake
• Lewis and Clark
• Liberty
• Lincoln
• Madison
• McCone
• Meagher
• Mineral
• Missoula
• Musselshell
• Park
• Petroleum
• Phillips
• Pondera
• Powder River
• Powell
• Prairie
• Ravalli
• Richland
• Roosevelt
• Rosebud
• Sanders
• Sheridan
• Silver Bow
• Stillwater
• Sweet Grass
• Teton
• Toole
• Treasure
• Valley
• Wheatland
• Wibaux
• Yellowstone

These counties cover a diverse range of geographic and climatic regions, from the Great Plains in the east to the Rocky Mountains in the west, reflecting Montana’s varied landscapes.