Ranking of Montana Counties By Percentage of White Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the Montana White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 4.96%. Among all Montana counties, Liberty County had the highest percentage of its White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (26.86%), followed by Prairie County (11.86%), and Toole County (10.72%).

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

You can see similar information for other educational attainments, and for other races and ethnicities.

You can also see similar information for other states and for the United States.

Ranking of Montana Counties By Percentage of White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Liberty County
Prairie County
Toole County
Rosebud County
Deer Lodge County
Wheatland County
Granite County
Powell County
Lincoln County
Musselshell County
Ranking of Montana Counties By Percentage of White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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Rank County Percentage of Population (Aged 25yrs+) (%)
1 Liberty County 26.86
2 Prairie County 11.86
3 Toole County 10.72
4 Rosebud County 9.37
5 Deer Lodge County 9.32
6 Wheatland County 9.15
7 Granite County 9.01
8 Powell County 8.90
9 Lincoln County 8.41
10 Musselshell County 8.40
11 Sanders County 8.30
12 Carter County 7.86
13 Treasure County 7.75
14 Phillips County 7.72
15 Sheridan County 7.64
16 Wibaux County 7.63
17 Golden Valley County 7.46
18 Daniels County 7.33
19 Teton County 7.02
20 Mineral County 6.99
21 Ravalli County 6.98
22 Stillwater County 6.84
23 Pondera County 6.60
24 Blaine County 6.26
25 Hill County 6.24
26 Cascade County 6.07
27 Silver Bow County 5.96
28 Broadwater County 5.91
29 Valley County 5.71
30 Powder River County 5.48
31 Big Horn County 5.46
32 Lake County 5.44
33 Beaverhead County 5.37
34 Jefferson County 5.36
35 Custer County 5.10
36 Flathead County 4.90
37 Dawson County 4.74
38 Glacier County 4.59
39 Yellowstone County 4.57
40 Carbon County 4.43
41 Judith Basin County 4.35
42 Roosevelt County 4.22
43 Fergus County 4.20
44 Fallon County 4.13
45 McCone County 4.11
46 Lewis and Clark County 4.05
47 Richland County 4.04
48 Madison County 3.75
49 Meagher County 3.71
50 Chouteau County 3.58
51 Park County 3.38
52 Missoula County 3.35
53 Sweet Grass County 3.19
54 Garfield County 2.41
55 Gallatin County 2.29
56 Petroleum County 0.65