Ranking of Montana Counties By Percentage of Population with Scotch Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 15.20K people in Montana with Scotch Irish ancestry (1.41% of Montana population). Among all Montana counties, Prairie County had the highest percentage of its population with Scotch Irish ancestry (4.73%), followed by Sanders County (4.63%), and Meagher County (4.56%).
The chart and table below shows the top 10 counties with high percentage of its population having Scotch Irish ancestry.
You can see similar information for other states and for other ancestry groups in Montana.
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Related Topics: Montana ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Montana Counties By Percentage of Population with Scotch Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Prairie County | 4.73 |
| 2 | Sanders County | 4.63 |
| 3 | Meagher County | 4.56 |
| 4 | Wheatland County | 3.99 |
| 5 | Carter County | 3.71 |
| 6 | Dawson County | 3.09 |
| 7 | Stillwater County | 2.95 |
| 8 | Mineral County | 2.76 |
| 9 | Carbon County | 2.31 |
| 10 | Ravalli County | 2.10 |
| 11 | Musselshell County | 2.08 |
| 12 | Garfield County | 2.06 |
| 13 | Madison County | 2.00 |
| 14 | Lake County | 1.90 |
| 15 | Park County | 1.85 |
| 16 | Lincoln County | 1.84 |
| 17 | Lewis and Clark County | 1.81 |
| 18 | Jefferson County | 1.63 |
| 19 | Petroleum County | 1.61 |
| 20 | Golden Valley County | 1.59 |
| 21 | Missoula County | 1.58 |
| 22 | Custer County | 1.50 |
| 22 | Rosebud County | 1.50 |
| 23 | Broadwater County | 1.42 |
| 24 | Gallatin County | 1.40 |
| 25 | Valley County | 1.36 |
| 26 | Cascade County | 1.34 |
| 27 | Fergus County | 1.28 |
| 28 | Powder River County | 1.19 |
| 28 | Sweet Grass County | 1.19 |
| 29 | Teton County | 1.18 |
| 30 | Yellowstone County | 1.17 |
| 31 | Flathead County | 1.11 |
| 32 | Chouteau County | 1.09 |
| 33 | Powell County | 0.94 |
| 34 | Daniels County | 0.92 |
| 34 | Phillips County | 0.92 |
| 35 | Judith Basin County | 0.90 |
| 36 | Treasure County | 0.87 |
| 37 | Deer Lodge County | 0.84 |
| 38 | Sheridan County | 0.82 |
| 39 | Silver Bow County | 0.81 |
| 40 | Glacier County | 0.67 |
| 41 | Pondera County | 0.60 |
| 42 | Beaverhead County | 0.56 |
| 43 | Fallon County | 0.55 |
| 44 | Hill County | 0.49 |
| 45 | Richland County | 0.40 |
| 46 | Granite County | 0.33 |
| 47 | Roosevelt County | 0.32 |
| 48 | Blaine County | 0.28 |
| 49 | Toole County | 0.24 |
| 50 | Big Horn County | 0.15 |
| 50 | Liberty County | 0.15 |
| 51 | McCone County | 0.11 |
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