Demographics & People — New Castle, Indiana
Population Overview
| Population (Census) | 17,356 |
| Estimated 2026 | ~17,400 |
| Median Age | 41.2 |
| Total Households | 7,195 |
| Family Households | 4,023 |
| Average Household Size | 2.35 |
| Diversity Index | 0.1427 (relatively homogeneous) |
Race & Ethnicity
| White | 15,458 |
| Black or African American | 654 |
| Asian | 156 |
| Hispanic or Latino | 450 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 6,201 |
| Other groups | 3,322 |
| German | 2,827 |
| English | 2,254 |
| Irish | 2,036 |
| American | 1,988 |
| European | 431 |
| Hispanic: Hispanic or Latino | 359 |
| French (except Basque) | 332 |
| Hispanic: Mexican | 317 |
Language
| English Only | 16,218 |
| Spanish | 176 |
| Population 5+ | 16,567 |
Veterans
| Veterans | 1,261 |
| Population 18+ | 13,826 |
Commuting
| Mean Commute Time | 20.8 minutes |
| Work from Home | 8.8% |
| 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 New Castle, Indiana.