Demographics & People — Petersburg, Ohio
Population Overview
| Population (Census) | 308 |
| Estimated 2026 | ~300 |
| Median Age | 29.6 |
| Total Households | 110 |
| Family Households | 83 |
| Average Household Size | 2.8 |
| Diversity Index | 0.1214 (relatively homogeneous) |
Race & Ethnicity
| White | 288 |
| Black or African American | 20 |
| Asian | 0 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| Polish | 90 |
| Slovak | 86 |
| Italian | 73 |
| Unclassified or not reported | 72 |
| Other groups | 52 |
| Croatian | 39 |
| American | 20 |
| Welsh | 18 |
| Irish | 18 |
| Scandinavian | 18 |
Language
| English Only | 245 |
| Spanish | 0 |
| Population 5+ | 245 |
Veterans
| Veterans | 0 |
| Population 18+ | 259 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013 (county fallback). Data for Petersburg, Ohio.