Demographics & People — Plain City, Ohio
Population Overview
| Population (Census) | 3,712 |
| Estimated 2026 | ~4,100 |
| Median Age | 36.0 |
| Total Households | 1,651 |
| Family Households | 1,083 |
| Average Household Size | 2.25 |
| Diversity Index | 0.0268 (relatively homogeneous) |
Race & Ethnicity
| White | 3,634 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 50 |
Heritage & Ancestry
| Group | Count |
| German | 1,026 |
| Unclassified or not reported | 888 |
| English | 642 |
| Irish | 606 |
| American | 458 |
| Other groups | 374 |
| Scotch-Irish | 94 |
| Italian | 91 |
| Hungarian | 84 |
| Scottish | 71 |
Language
| English Only | 3,200 |
| Spanish | 73 |
| Population 5+ | 3,392 |
Veterans
| Veterans | 211 |
| Population 18+ | 2,719 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Plain City, Ohio.