Demographics & People — Shelby, Montana
Population Overview
| Population (Census) | 3,129 |
| Estimated 2026 | ~3,400 |
| Median Age | 37.7 |
| Total Households | 1,154 |
| Family Households | 652 |
| Average Household Size | 2.18 |
| Diversity Index | 0.1883 (relatively homogeneous) |
Race & Ethnicity
| White | 2,549 |
| Black or African American | 93 |
| Asian | 36 |
| Hispanic or Latino | 159 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 753 |
| Other groups | 679 |
| German | 510 |
| English | 413 |
| Norwegian | 334 |
| Irish | 284 |
| American | 167 |
| Hispanic: Hispanic or Latino | 165 |
| Scottish | 122 |
| Hispanic: Mexican | 122 |
Language
| English Only | 2,859 |
| Spanish | 57 |
| Population 5+ | 3,002 |
Veterans
| Veterans | 301 |
| Population 18+ | 2,578 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Shelby, Montana.