Demographics & People — Union, Iowa
Population Overview
| Population (Census) | 391 |
| Estimated 2026 | ~300 |
| Median Age | 51.1 |
| Total Households | 198 |
| Family Households | 104 |
| Average Household Size | 1.97 |
| Diversity Index | 0.0155 (relatively homogeneous) |
Race & Ethnicity
| White | 382 |
| Black or African American | 0 |
| Asian | 1 |
| Hispanic or Latino | 2 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 175 |
| German | 103 |
| Irish | 79 |
| English | 36 |
| American | 30 |
| Norwegian | 22 |
| Scottish | 21 |
| Danish | 13 |
| Other groups | 13 |
| Czech | 12 |
Language
| English Only | 379 |
| Spanish | 0 |
| Population 5+ | 379 |
Veterans
| Veterans | 45 |
| Population 18+ | 355 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Union, Iowa.