Demographics & People — Bonaparte, Iowa
Population Overview
| Population (Census) | 382 |
| Estimated 2026 | ~200 |
| Median Age | 38.0 |
| Total Households | 146 |
| Family Households | 73 |
| Average Household Size | 2.62 |
| Diversity Index | 0.0427 (relatively homogeneous) |
Race & Ethnicity
| White | 360 |
| Black or African American | 2 |
| Asian | 0 |
| Hispanic or Latino | 6 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 183 |
| German | 121 |
| Irish | 47 |
| French (except Basque) | 36 |
| Other groups | 33 |
| English | 24 |
| American | 21 |
| Scotch-Irish | 15 |
| Czechoslovakian | 13 |
| African | 7 |
Language
| English Only | 348 |
| Spanish | 3 |
| Population 5+ | 353 |
Veterans
| Veterans | 22 |
| Population 18+ | 273 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Bonaparte, Iowa.