Counties in Montana
Montana has 56 counties. They are listed by population, largest first, starting with Yellowstone County, Gallatin County, and Missoula County.
- Yellowstone County, Montana
- Gallatin County, Montana
- Missoula County, Montana
- Flathead County, Montana
- Cascade County, Montana
- Lewis and Clark County, Montana
- Ravalli County, Montana
- Silver Bow County, Montana
- Lake County, Montana
- Lincoln County, Montana
- Park County, Montana
- Hill County, Montana
- Sanders County, Montana
- Glacier County, Montana
- Jefferson County, Montana
- Big Horn County, Montana
- Custer County, Montana
- Fergus County, Montana
- Carbon County, Montana
- Richland County, Montana
- Roosevelt County, Montana
- Beaverhead County, Montana
- Madison County, Montana
- Deer Lodge County, Montana
- Stillwater County, Montana
- Dawson County, Montana
- Broadwater County, Montana
- Rosebud County, Montana
- Valley County, Montana
- Powell County, Montana
- Blaine County, Montana
- Teton County, Montana
- Pondera County, Montana
- Chouteau County, Montana
- Musselshell County, Montana
- Toole County, Montana
- Mineral County, Montana
- Phillips County, Montana
- Sweet Grass County, Montana
- Granite County, Montana
- Sheridan County, Montana
- Fallon County, Montana
- Judith Basin County, Montana
- Meagher County, Montana
- Wheatland County, Montana
- Liberty County, Montana
- Powder River County, Montana
- McCone County, Montana
- Daniels County, Montana
- Carter County, Montana
- Garfield County, Montana
- Prairie County, Montana
- Wibaux County, Montana
- Golden Valley County, Montana
- Treasure County, Montana
- Petroleum County, Montana