Demographics & People — Custer, Montana
Population Overview
| Population (Census) | 155 |
| Estimated 2026 | ~400 |
| Median Age | 54.6 |
| Total Households | 80 |
| Family Households | 27 |
| Average Household Size | 1.94 |
| Diversity Index | 0.0 (relatively homogeneous) |
Race & Ethnicity
| White | 149 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| German | 53 |
| Norwegian | 50 |
| English | 26 |
| Other groups | 15 |
| Unclassified or not reported | 14 |
| Irish | 13 |
| American | 12 |
| Scottish | 8 |
| Dutch | 7 |
| Hispanic: Mexican | 7 |
Language
| English Only | 145 |
| Spanish | 0 |
| Population 5+ | 145 |
Veterans
| Veterans | 14 |
| Population 18+ | 119 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Custer, Montana.