Demographics & People — Eureka, Montana
Population Overview
| Population (Census) | 2,009 |
| Estimated 2026 | ~1,500 |
| Median Age | 42.4 |
| Total Households | 625 |
| Family Households | 411 |
| Average Household Size | 3.16 |
| Diversity Index | 0.0829 (relatively homogeneous) |
Race & Ethnicity
| White | 1,767 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 80 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 808 |
| German | 332 |
| Other groups | 267 |
| European | 204 |
| English | 183 |
| Irish | 173 |
| Hispanic: Hispanic or Latino | 148 |
| Hispanic: Other Hispanic or Latino | 132 |
| Hispanic: Spanish | 118 |
| Norwegian | 76 |
Language
| English Only | 1,763 |
| Spanish | 69 |
| Population 5+ | 1,852 |
Veterans
| Veterans | 107 |
| Population 18+ | 1,280 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Eureka, Montana.