Demographics & People — Sullivan, Ohio
Population Overview
| Population (Census) | 841 |
| Estimated 2026 | ~1,600 |
| Median Age | 61.1 |
| Total Households | 319 |
| Family Households | 289 |
| Average Household Size | 2.64 |
| Diversity Index | 0.0728 (relatively homogeneous) |
Race & Ethnicity
| White | 788 |
| Black or African American | 0 |
| Asian | 31 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| English | 204 |
| Polish | 204 |
| American | 193 |
| Unclassified or not reported | 189 |
| German | 178 |
| Other groups | 125 |
| Hungarian | 99 |
| Irish | 78 |
| Scottish | 25 |
| Italian | 10 |
Language
| English Only | 810 |
| Spanish | 0 |
| Population 5+ | 841 |
Veterans
| Veterans | 151 |
| Population 18+ | 850 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Sullivan, Ohio.