Demographics & People — Castalia, Ohio
Population Overview
| Population (Census) | 1,348 |
| Estimated 2026 | ~1,000 |
| Median Age | 32.2 |
| Total Households | 466 |
| Family Households | 344 |
| Average Household Size | 2.89 |
| Diversity Index | 0.1667 (relatively homogeneous) |
Race & Ethnicity
| White | 967 |
| Black or African American | 17 |
| Asian | 12 |
| Hispanic or Latino | 66 |
Heritage & Ancestry
| Group | Count |
| Other groups | 421 |
| German | 411 |
| English | 382 |
| Unclassified or not reported | 137 |
| Italian | 88 |
| Irish | 76 |
| Hispanic: Hispanic or Latino | 42 |
| Scottish | 37 |
| Hispanic: Mexican | 35 |
| American | 28 |
Language
| English Only | 1,225 |
| Spanish | 7 |
| Population 5+ | 1,248 |
Veterans
| Veterans | 47 |
| Population 18+ | 744 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Castalia, Ohio.