Demographics & People — Cincinnati, Iowa
Population Overview
| Population (Census) | 201 |
| Estimated 2026 | ~300 |
| Median Age | 47.3 |
| Total Households | 91 |
| Family Households | 64 |
| Average Household Size | 2.21 |
| Diversity Index | 0.0 (relatively homogeneous) |
Race & Ethnicity
| White | 200 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 75 |
| German | 62 |
| Irish | 35 |
| English | 22 |
| Italian | 21 |
| Other groups | 12 |
| American | 11 |
| Scottish | 11 |
| Scotch-Irish | 10 |
| Dutch | 9 |
Language
| English Only | 194 |
| Spanish | 0 |
| Population 5+ | 194 |
Veterans
| Veterans | 9 |
| Population 18+ | 189 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Cincinnati, Iowa.