Ranking of Montana Counties By Percentage of Population that are Non-Hispanic American Indian and Alaska Native in 2015

Updated on June 18, 2025.

Based on the US Census Vintage data estimates, in 2015, among all Montana counties, Big Horn County had the highest percentage of its population who identified their ethnicity as Non-Hispanic American Indian and Alaska Native (63.91%), followed by Glacier County (62.74%), and Roosevelt County (56.99%).

The chart below shows the top 10 counties, and the table below shows the ranking of all Montana counties.

You can see similar ranking information for other racial and ethnicity groups in the United States.

You can also see similar information for other states, and also the ranking of all counties in the United States.

See this for other years:
Ranking of Montana Counties By Percentage of Pop. that are Non-Hispanic American Indian and Alaska Native in 2015
Big Horn
Glacier
Roosevelt
Blaine
Rosebud
Lake
Hill
Chouteau
Pondera
Valley
Ranking of Montana Counties By Percentage of Pop. that are Non-Hispanic American Indian and Alaska Native in 2015
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Rank County % of County Population
1 Big Horn County 63.91
2 Glacier County 62.74
3 Roosevelt County 56.99
4 Blaine County 48.42
5 Rosebud County 35.49
6 Lake County 22.99
7 Hill County 21.61
8 Chouteau County 18.73
9 Pondera County 13.64
10 Valley County 9.28
11 Phillips County 8.65
12 Toole County 5.04
13 Powell County 4.62
14 Cascade County 4.01
15 Yellowstone County 3.82
16 Sanders County 3.61
17 Deer Lodge County 3.09
18 Missoula County 2.46
19 Daniels County 2.17
20 Mineral County 2.1
21 Treasure County 2.06
22 Sheridan County 1.91
23 Dawson County 1.83
24 Powder River County 1.81
25 Lewis and Clark County 1.79
25 Richland County 1.79
26 Silver Bow County 1.75
27 Custer County 1.74
28 Beaverhead County 1.63
29 Golden Valley County 1.59
30 Jefferson County 1.58
30 Teton County 1.58
31 Musselshell County 1.51
32 Broadwater County 1.38
33 Fergus County 1.32
34 McCone County 1.24
35 Judith Basin County 1.14
36 Carbon County 1.12
37 Flathead County 1.09
38 Petroleum County 1.05
39 Granite County 1.04
40 Lincoln County 1.02
41 Park County 0.94
42 Ravalli County 0.88
43 Carter County 0.87
44 Wibaux County 0.84
45 Gallatin County 0.83
45 Stillwater County 0.83
46 Wheatland County 0.76
47 Sweet Grass County 0.75
48 Fallon County 0.69
49 Madison County 0.59
50 Meagher County 0.55
51 Prairie County 0.53
52 Liberty County 0.42
53 Garfield County 0.39