Demographics & People — St. Maries, Idaho
Population Overview
| Population (Census) | 3,032 |
| Estimated 2026 | ~2,700 |
| Median Age | 41.1 |
| Total Households | 1,181 |
| Family Households | 732 |
| Average Household Size | 2.49 |
| Diversity Index | 0.04 (relatively homogeneous) |
Race & Ethnicity
| White | 2,931 |
| Black or African American | 4 |
| Asian | 0 |
| Hispanic or Latino | 57 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 497 |
| German | 443 |
| English | 385 |
| Other groups | 376 |
| Irish | 360 |
| American | 239 |
| Norwegian | 147 |
| Scottish | 92 |
| Swedish | 87 |
| French (except Basque) | 73 |
Language
| English Only | 2,810 |
| Spanish | 35 |
| Population 5+ | 2,863 |
Veterans
| Veterans | 156 |
| Population 18+ | 1,880 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for St. Maries, Idaho.