Ranking of Montana Counties By Population with Portuguese Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 2.01K people in Montana with Portuguese ancestry. Among all Montana counties, Gallatin County had the highest population with Portuguese ancestry (324), followed by Yellowstone County (293), and Cascade County (241).

The chart and table below shows the top 10 counties with high number of people with Portuguese 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 Portuguese Ancestry in 2021
Gallatin County
Yellowstone County
Cascade County
Missoula County
Flathead County
Lewis and Clark County
Madison County
Ravalli County
Custer County
Teton County
Ranking of Montana Counties By Population with Portuguese Ancestry in 2021
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Rank County Population
1 Gallatin County 324
2 Yellowstone County 293
3 Cascade County 241
4 Missoula County 198
5 Flathead County 164
6 Lewis and Clark County 127
7 Madison County 118
8 Ravalli County 109
9 Custer County 67
10 Teton County 59
11 Lake County 35
12 Beaverhead County 33
13 Sanders County 30
14 Park County 25
15 Silver Bow County 23
16 Hill County 16
17 Broadwater County 14
17 Stillwater County 14
18 Deer Lodge County 12
18 Mineral County 12
19 Carbon County 11
19 Lincoln County 11
19 Rosebud County 11
20 Sweet Grass County 8
21 Jefferson County 6
21 Judith Basin County 6
22 Treasure County 5
23 Dawson County 4
23 Granite County 4
23 Liberty County 4
23 Powell County 4
23 Richland County 4
23 Toole County 4
24 McCone County 3
25 Chouteau County 2
25 Roosevelt County 2
26 Sheridan County 1
26 Valley County 1