Ranking of Montana Counties By Population with Welsh Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 9.51K people in Montana with Welsh ancestry. Among all Montana counties, Gallatin County had the highest population with Welsh ancestry (1.13K), followed by Yellowstone County (1.07K), and Lewis and Clark County (1.03K).

The chart and table below shows the top 10 counties with high number of people with Welsh 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 Population with Welsh Ancestry in 2021
Gallatin County
Yellowstone County
Lewis and Clark County
Cascade County
Flathead County
Missoula County
Ravalli County
Silver Bow County
Dawson County
Madison County
Ranking of Montana Counties By Population with Welsh Ancestry in 2021
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Rank County Population
1 Gallatin County 1125
2 Yellowstone County 1072
3 Lewis and Clark County 1032
4 Cascade County 986
5 Flathead County 791
6 Missoula County 760
7 Ravalli County 491
8 Silver Bow County 413
9 Dawson County 293
10 Madison County 212
11 Sanders County 201
12 Lake County 199
13 Custer County 174
14 Deer Lodge County 130
15 Beaverhead County 128
16 Park County 122
17 Stillwater County 97
18 Lincoln County 92
19 Broadwater County 90
20 Richland County 88
21 Fergus County 82
22 Carbon County 81
23 Jefferson County 78
24 Mineral County 60
25 Toole County 55
26 Big Horn County 52
27 Chouteau County 49
27 Hill County 49
27 Liberty County 49
27 Sweet Grass County 49
28 Meagher County 41
29 Teton County 40
30 Rosebud County 37
31 Powell County 35
32 Glacier County 34
33 Granite County 31
34 Wheatland County 23
35 Blaine County 21
36 Pondera County 19
37 McCone County 18
38 Garfield County 17
39 Musselshell County 15
39 Powder River County 15
40 Roosevelt County 13
41 Judith Basin County 12
42 Carter County 11
43 Golden Valley County 9
44 Sheridan County 6
45 Fallon County 4
45 Phillips County 4