Population of Montana 2021

Population

With a population of 1,062,305 (2018 estimate), Montana is one of the most populous states in the United States. In addition, Montana is the third lowest population density in the United States after the states of Alaska and Wyoming. Since the 1980s, the region has experienced immigration from retirees and nature lovers, while younger people and long-established farming families often migrate.

89.9% of the population is white (87.5% non-Latin American whites), followed by Native Americans (Indians) at 6.4%. Hispanics make up 3.1%.

The twelve Indian tribes are the Kootenai, Blackfoot, Assiniboine, Northern Cheyenne, Salish and Anishinabe, Cree, Pend d’Oreille, Gros Ventre, Chippewa, Sioux, Crow. Around two thirds of them now live on reservations. Between 2000 and 2010, the Native American population grew by 18%.

Religions

The religious communities with the largest number of members in 2000 were the Catholic Church with 169,250, the Evangelical Lutheran Church in America with 50,287 and the Church of Jesus Christ of Latter-day Saints (Mormons) with 32,726 followers.

Top Counties by Population in Montana

Rank County Name Population Population Density (per kmĀ²)
1 Yellowstone County 161,311 23.64
2 Missoula County 119,611 17.78
3 Gallatin County 114,445 17.63
4 Flathead County 103,817 7.86
5 Cascade County 81,377 11.65
6 Lewis and Clark County 69,443 7.75
7 Ravalli County 43,817 7.07
8 Silver Bow County 34,926 18.78
9 Lake County 29,110 7.52
10 Lincoln County 19,136 2.04
11 Park County 16,617 2.42
12 Hill County 16,607 2.21
13 Glacier County 13,707 1.77
14 Big Horn County 13,293 1.03
15 Custer County 12,103 1.24
16 Sanders County 11,855 1.66
17 Jefferson County 11,569 2.70
18 Fergus County 11,453 1.02
19 Roosevelt County 11,070 1.81
20 Richland County 10,924 2.02
21 Carbon County 10,410 1.96
22 Stillwater County 9,545 2.05
23 Dawson County 9,529 1.55
24 Beaverhead County 9,356 0.65
25 Deer Lodge County 9,161 4.80
26 Rosebud County 9,074 0.70
27 Madison County 7,831 0.84
28 Valley County 7,448 0.58
29 Powell County 6,979 1.16
30 Blaine County 6,630 0.61
31 Teton County 6,173 1.05
32 Pondera County 5,983 1.42
33 Chouteau County 5,905 0.57
34 Broadwater County 5,678 1.84
35 Toole County 4,864 0.98
36 Musselshell County 4,662 0.96
37 Mineral County 4,327 1.37
38 Phillips County 4,085 0.31
39 Sweet Grass County 3,721 0.77
40 Sheridan County 3,435 0.79
41 Granite County 3,220 0.72
42 Fallon County 3,119 0.74
43 Liberty County 2,370 0.64
44 Wheatland County 2,247 0.61
45 Judith Basin County 2,002 0.41
46 Meagher County 1,864 0.30
47 Daniels County 1,804 0.49
48 Powder River County 1,727 0.20
49 McCone County 1,705 0.25
50 Garfield County 1,320 0.11
51 Carter County 1,180 0.14
52 Prairie County 1,098 0.24
53 Wibaux County 1,045 0.45
54 Golden Valley County 863 0.28
55 Treasure County 690 0.27
56 Petroleum County 524 0.12

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