Demographics & People — Montpelier, Idaho
Population Overview
| Population (Census) | 2,681 |
| Estimated 2026 | ~2,700 |
| Median Age | 42.0 |
| Total Households | 991 |
| Family Households | 631 |
| Average Household Size | 2.65 |
| Diversity Index | 0.1124 (relatively homogeneous) |
Race & Ethnicity
| White | 2,528 |
| Black or African American | 0 |
| Asian | 10 |
| Hispanic or Latino | 150 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 637 |
| English | 635 |
| Other groups | 462 |
| German | 314 |
| Scottish | 206 |
| Swedish | 170 |
| Hispanic: Hispanic or Latino | 125 |
| Welsh | 123 |
| Irish | 121 |
| American | 107 |
Language
| English Only | 2,311 |
| Spanish | 131 |
| Population 5+ | 2,463 |
Veterans
| Veterans | 153 |
| Population 18+ | 2,000 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Montpelier, Idaho.