Demographics & People — Gainesville, Missouri
Population Overview
| Population (Census) | 902 |
| Estimated 2026 | ~1,300 |
| Median Age | 40.4 |
| Total Households | 332 |
| Family Households | 238 |
| Average Household Size | 2.55 |
| Diversity Index | 0.1358 (relatively homogeneous) |
Race & Ethnicity
| White | 801 |
| Black or African American | 39 |
| Asian | 0 |
| Hispanic or Latino | 23 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 433 |
| Irish | 98 |
| English | 90 |
| Other groups | 82 |
| American | 73 |
| Scotch-Irish | 60 |
| French (except Basque) | 47 |
| German | 40 |
| Hispanic: Hispanic or Latino | 37 |
| Scottish | 25 |
Language
| English Only | 858 |
| Spanish | 3 |
| Population 5+ | 871 |
Veterans
| Veterans | 47 |
| Population 18+ | 599 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Gainesville, Missouri.