Demographics & People — Ennis, Montana
Population Overview
| Population (Census) | 615 |
| Estimated 2026 | ~1,300 |
| Median Age | 50.5 |
| Total Households | 299 |
| Family Households | 146 |
| Average Household Size | 1.96 |
| Diversity Index | 0.0 (relatively homogeneous) |
Race & Ethnicity
| White | 609 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| German | 170 |
| Unclassified or not reported | 170 |
| Irish | 154 |
| English | 109 |
| American | 45 |
| Portuguese | 31 |
| Italian | 30 |
| Polish | 26 |
| Danish | 24 |
| Finnish | 24 |
Language
| English Only | 602 |
| Spanish | 0 |
| Population 5+ | 602 |
Veterans
| Veterans | 50 |
| Population 18+ | 631 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Ennis, Montana.