Montana Counties

There are a total of 56 Counties in Montana. The most populous County is Yellowstone County with 148191 residents. The least populous County is Petroleum County with 566 residents.

Map List Related

Map of All Counties in Montana

List of All Counties in Montana

Map KeyNamePopulation
Beaverhead County9,228
Big Horn County12,872
Blaine County6,514
Broadwater County5,575
Carbon County10,057
Carter County1,276
Cascade County81,248
Chouteau County5,811
Custer County11,706
Daniels County1,734
Dawson County9,022
Deer Lodge County9,277
Fallon County3,051
Fergus County11,507
Flathead County90,967
Gallatin County90,339
Garfield County1,100
Glacier County13,422
Golden Valley County769
Granite County3,083
Hill County16,157
Jefferson County11,360
Judith Basin County2,052
Lake County28,794
Lewis and Clark County63,432
Liberty County2,326
Lincoln County19,594
Madison County7,688
Mccone County1,808
Meagher County1,900
Mineral County4,203
Missoula County109,402
Musselshell County4,597
Park County15,655
Petroleum County566
Phillips County4,203
Pondera County6,147
Powder River County1,639
Powell County7,067
Prairie County1,193
Ravalli County40,311
Richland County9,961
Roosevelt County10,477
Rosebud County9,261
Sanders County11,421
Sheridan County3,447
Silver Bow County34,164
Stillwater County9,096
Sweet Grass County3,661
Teton County6,082
Toole County5,210
Treasure County698
Valley County7,423
Wheatland County2,142
Wibaux County899
Yellowstone County148,191

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