Demographics & People — St. Marie, Montana
Population Overview
| Population (Census) | 319 |
|---|
| Estimated 2026 | ~300 |
|---|
| Median Age | 37.9 |
|---|
| Total Households | 120 |
|---|
| Family Households | 50 |
|---|
| Average Household Size | 2.66 |
|---|
| Diversity Index | 0.0 (relatively homogeneous) |
|---|
Race & Ethnicity
| White | 178 |
|---|
| Black or African American | 0 |
|---|
| Asian | 0 |
|---|
| Hispanic or Latino | 0 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 256 |
| Other groups | 75 |
| German | 70 |
| European | 58 |
| Norwegian | 16 |
| Russian | 11 |
| English | 7 |
Language
| English Only | 319 |
|---|
| Spanish | 0 |
|---|
| Population 5+ | 319 |
|---|
Veterans
| Veterans | 12 |
|---|
| Population 18+ | 379 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for St. Marie, Montana.
