Ranking of Montana Counties By Percentage of Population with Czech Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 6.76K people in Montana with Czech ancestry (0.63% of Montana population). Among all Montana counties, Fergus County had the highest percentage of its population with Czech ancestry (3.33%), followed by Fallon County (1.63%), and Jefferson County (1.62%).

The chart and table below shows the top 10 counties with high percentage of its population having Czech ancestry.

You can see similar information for other states and for other ancestry groups in Montana.

Data Source: US Census Bureau.
Ranking of Montana Counties By Percentage of Population with Czech Ancestry in 2021
Fergus County
Fallon County
Jefferson County
Wheatland County
Chouteau County
Carbon County
Golden Valley County
Toole County
Phillips County
Carter County
Ranking of Montana Counties By Percentage of Population with Czech Ancestry in 2021
0 of 0
Rank County Percentage of Pop. (%)
1 Fergus County 3.33
2 Fallon County 1.63
3 Jefferson County 1.62
4 Wheatland County 1.54
5 Chouteau County 1.49
6 Carbon County 1.46
6 Golden Valley County 1.46
7 Toole County 1.30
8 Phillips County 1.23
9 Carter County 1.19
10 Judith Basin County 1.15
11 Deer Lodge County 1.14
12 Glacier County 1.08
13 Daniels County 1.03
14 Custer County 0.87
14 Dawson County 0.87
15 Gallatin County 0.86
16 Garfield County 0.82
17 Stillwater County 0.80
18 McCone County 0.67
19 Lake County 0.63
20 Big Horn County 0.62
20 Meagher County 0.62
21 Richland County 0.61
22 Beaverhead County 0.60
22 Cascade County 0.60
22 Ravalli County 0.60
23 Lewis and Clark County 0.55
24 Sweet Grass County 0.54
24 Yellowstone County 0.54
25 Hill County 0.52
25 Valley County 0.52
26 Missoula County 0.51
27 Flathead County 0.50
28 Musselshell County 0.44
29 Teton County 0.41
30 Powder River County 0.40
31 Pondera County 0.39
32 Rosebud County 0.38
33 Lincoln County 0.35
34 Broadwater County 0.30
34 Granite County 0.30
34 Wibaux County 0.30
35 Silver Bow County 0.29
36 Park County 0.24
37 Liberty County 0.20
37 Sheridan County 0.20
38 Sanders County 0.15
39 Madison County 0.14
39 Powell County 0.14
40 Mineral County 0.11
41 Blaine County 0.09
42 Roosevelt County 0.07