Demographics & People — Barnum, Iowa
Population Overview
| Population (Census) | 279 |
| Estimated 2026 | ~200 |
| Median Age | 27.4 |
| Total Households | 107 |
| Family Households | 81 |
| Average Household Size | 2.61 |
| Diversity Index | 0.0075 (relatively homogeneous) |
Race & Ethnicity
| White | 264 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 1 |
Heritage & Ancestry
| Group | Count |
| German | 96 |
| American | 69 |
| Unclassified or not reported | 56 |
| European | 35 |
| Irish | 34 |
| Other groups | 23 |
| Swedish | 13 |
| Danish | 7 |
| Norwegian | 6 |
| French (except Basque) | 5 |
Language
| English Only | 232 |
| Spanish | 1 |
| Population 5+ | 238 |
Veterans
| Veterans | 5 |
| Population 18+ | 173 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Barnum, Iowa.