Demographics & People — Belvidere, South Dakota
Population Overview
| Population (Census) | 112 |
| Estimated 2026 | ~100 |
| Median Age | 14.6 |
| Total Households | 12 |
| Family Households | 12 |
| Average Household Size | 9.33 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 85 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| Irish | 51 |
| French (except Basque) | 45 |
| Other groups | 38 |
| Unclassified or not reported | 3 |
| German | 2 |
Language
| English Only | 112 |
| Spanish | 0 |
| Population 5+ | 112 |
Veterans
| Veterans | 2 |
| Population 18+ | 33 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Belvidere, South Dakota.