Demographics & People — Spencerville, Ohio
Population Overview
| Population (Census) | 2,120 |
| Estimated 2026 | ~2,100 |
| Median Age | 34.3 |
| Total Households | 845 |
| Family Households | 485 |
| Average Household Size | 2.45 |
| Diversity Index | 0.0511 (relatively homogeneous) |
Race & Ethnicity
| White | 2,016 |
| Black or African American | 37 |
| Asian | 0 |
| Hispanic or Latino | 17 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 832 |
| German | 647 |
| Other groups | 362 |
| Irish | 292 |
| American | 156 |
| English | 66 |
| Italian | 61 |
| Pennsylvania German | 54 |
| French (except Basque) | 50 |
| European | 39 |
Language
| English Only | 1,888 |
| Spanish | 0 |
| Population 5+ | 1,923 |
Veterans
| Veterans | 119 |
| Population 18+ | 1,388 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Spencerville, Ohio.