Montana library
Montana Counties
56 counties, each with its judicial district and prosecuting office.
- Yellowstone County, Montanapop. 164,731
- Gallatin County, Montanapop. 118,960
- Missoula County, Montanapop. 117,922
- Flathead County, Montanapop. 104,357
- Cascade County, Montanapop. 84,414
- Lewis and Clark County, Montanapop. 70,973
- Ravalli County, Montanapop. 44,174
- Silver Bow County, Montanapop. 35,133
- Lake County, Montanapop. 31,134
- Lincoln County, Montanapop. 19,677
- Park County, Montanapop. 17,191
- Hill County, Montanapop. 16,309
- Glacier County, Montanapop. 13,778
- Big Horn County, Montanapop. 13,124
- Sanders County, Montanapop. 12,400
- Jefferson County, Montanapop. 12,085
- Custer County, Montanapop. 11,867
- Richland County, Montanapop. 11,491
- Fergus County, Montanapop. 11,446
- Roosevelt County, Montanapop. 10,794
- Carbon County, Montanapop. 10,473
- Deer Lodge County, Montanapop. 9,421
- Beaverhead County, Montanapop. 9,371
- Stillwater County, Montanapop. 8,963
- Dawson County, Montanapop. 8,940
- Madison County, Montanapop. 8,623
- Rosebud County, Montanapop. 8,329
- Valley County, Montanapop. 7,578
- Blaine County, Montanapop. 7,044
- Powell County, Montanapop. 6,946
- Broadwater County, Montanapop. 6,774
- Teton County, Montanapop. 6,226
- Pondera County, Montanapop. 5,898
- Chouteau County, Montanapop. 5,895
- Toole County, Montanapop. 4,971
- Musselshell County, Montanapop. 4,730
- Mineral County, Montanapop. 4,535
- Phillips County, Montanapop. 4,217
- Sweet Grass County, Montanapop. 3,678
- Sheridan County, Montanapop. 3,539
- Granite County, Montanapop. 3,309
- Fallon County, Montanapop. 3,049
- Wheatland County, Montanapop. 2,069
- Judith Basin County, Montanapop. 2,023
- Liberty County, Montanapop. 1,959
- Meagher County, Montanapop. 1,927
- McCone County, Montanapop. 1,729
- Powder River County, Montanapop. 1,694
- Daniels County, Montanapop. 1,661
- Carter County, Montanapop. 1,415
- Garfield County, Montanapop. 1,173
- Prairie County, Montanapop. 1,088
- Wibaux County, Montanapop. 937
- Golden Valley County, Montanapop. 823
- Treasure County, Montanapop. 762
- Petroleum County, Montanapop. 496