Demographics & People — Red Oak, Iowa
Population Overview
| Population (Census) | 5,542 |
| Estimated 2026 | ~5,400 |
| Median Age | 40.2 |
| Total Households | 2,502 |
| Family Households | 1,581 |
| Average Household Size | 2.16 |
| Diversity Index | 0.0749 (relatively homogeneous) |
Race & Ethnicity
| White | 5,004 |
| Black or African American | 53 |
| Asian | 52 |
| Hispanic or Latino | 95 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 1,887 |
| German | 1,283 |
| English | 783 |
| Other groups | 742 |
| Irish | 510 |
| Swedish | 298 |
| American | 245 |
| Italian | 183 |
| Norwegian | 93 |
| French (except Basque) | 92 |
Language
| English Only | 5,110 |
| Spanish | 90 |
| Population 5+ | 5,259 |
Veterans
| Veterans | 385 |
| Population 18+ | 4,307 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Red Oak, Iowa.