Demographics & People — St. Joseph, Iowa
Population Overview
| Population (Census) | 78 |
| Estimated 2026 | ~100 |
| Median Age | 73.5 |
| Total Households | 43 |
| Family Households | 17 |
| Average Household Size | 1.81 |
| Diversity Index | 0.0 (relatively homogeneous) |
Race & Ethnicity
| White | 78 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| German | 49 |
| Luxembourger | 18 |
| Hungarian | 11 |
| Other groups | 10 |
| Norwegian | 8 |
Language
| English Only | 78 |
| Spanish | 0 |
| Population 5+ | 78 |
Veterans
| Veterans | 0 |
| Population 18+ | 67 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for St. Joseph, Iowa.