Demographics & People — Delmar, Iowa
Population Overview
| Population (Census) | 417 |
| Estimated 2026 | ~700 |
| Median Age | 38.6 |
| Total Households | 176 |
| Family Households | 106 |
| Average Household Size | 2.37 |
| Diversity Index | 0.1256 (relatively homogeneous) |
Race & Ethnicity
| White | 381 |
| Black or African American | 17 |
| Asian | 0 |
| Hispanic or Latino | 10 |
Heritage & Ancestry
| Group | Count |
| German | 184 |
| Irish | 127 |
| Unclassified or not reported | 95 |
| Other groups | 75 |
| English | 41 |
| Scotch-Irish | 13 |
| American | 11 |
| Scottish | 11 |
| Hispanic: Hispanic or Latino | 11 |
| Danish | 9 |
Language
| English Only | 392 |
| Spanish | 0 |
| Population 5+ | 392 |
Veterans
| Veterans | 40 |
| Population 18+ | 349 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Delmar, Iowa.