Demographics & People — Sinclair, Wyoming
Population Overview
| Population (Census) | 359 |
| Estimated 2026 | ~400 |
| Median Age | 38.1 |
| Total Households | 166 |
| Family Households | 107 |
| Average Household Size | 2.14 |
| Diversity Index | 0.087 (relatively homogeneous) |
Race & Ethnicity
| White | 338 |
| Black or African American | 2 |
| Asian | 1 |
| Hispanic or Latino | 13 |
Heritage & Ancestry
| Group | Count |
| German | 139 |
| Unclassified or not reported | 73 |
| English | 45 |
| Irish | 44 |
| European | 41 |
| Other groups | 34 |
| Swedish | 32 |
| Polish | 23 |
| Italian | 21 |
| Dutch | 13 |
Language
| English Only | 339 |
| Spanish | 10 |
| Population 5+ | 357 |
Veterans
| Veterans | 30 |
| Population 18+ | 319 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Sinclair, Wyoming.