St. Mary CDP, MT Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 7, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 491 St. Mary CDP, MT population, 137 had Unclassified ancestry (27.90%), 105 had German ancestry (21.39%), and 78 had Irish ancestry (15.89%).
The chart below shows the top 9 ancestry groups, and the table below shows both the number and percentages for all ancestry groups.
You can also see similar information for other Montana cities and places, Montana counties, and for Montana.
Data Source: US Census - ACS 5-Year Estimates (2021).
St. Mary CDP, MT Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Unclassified | 137 | 27.90 |
| German | 105 | 21.39 |
| Irish | 78 | 15.89 |
| Other Groups | 77 | 15.68 |
| Eastern European | 55 | 11.20 |
| English | 35 | 7.13 |
| Polish | 28 | 5.70 |
| Italian | 27 | 5.50 |
| Norwegian | 21 | 4.28 |