Demographics & People — Decatur, Indiana
Population Overview
| Population (Census) | 9,769 |
| Estimated 2026 | ~9,900 |
| Median Age | 44.6 |
| Total Households | 4,360 |
| Family Households | 2,368 |
| Average Household Size | 2.17 |
| Diversity Index | 0.1942 (relatively homogeneous) |
Race & Ethnicity
| White | 8,795 |
| Black or African American | 111 |
| Asian | 1 |
| Hispanic or Latino | 948 |
Heritage & Ancestry
| Group | Count |
| German | 3,018 |
| Unclassified or not reported | 2,744 |
| Other groups | 2,185 |
| English | 857 |
| Hispanic: Hispanic or Latino | 806 |
| Irish | 799 |
| Hispanic: Mexican | 711 |
| American | 476 |
| Swiss | 341 |
| French (except Basque) | 314 |
Language
| English Only | 8,734 |
| Spanish | 169 |
| Population 5+ | 9,007 |
Veterans
| Veterans | 374 |
| Population 18+ | 7,587 |
Commuting
| Mean Commute Time | 26.9 minutes |
| Work from Home | 3.3% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Decatur, Indiana.