Demographics & People — Rensselaer, Missouri
Population Overview
| Population (Census) | 262 |
| Estimated 2026 | ~200 |
| Median Age | 50.1 |
| Total Households | 91 |
| Family Households | 64 |
| Average Household Size | 2.69 |
| Diversity Index | 0.1391 (relatively homogeneous) |
Race & Ethnicity
| White | 239 |
| Black or African American | 8 |
| Asian | 0 |
| Hispanic or Latino | 11 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 86 |
| German | 60 |
| Other groups | 43 |
| Irish | 39 |
| English | 36 |
| Hispanic: Hispanic or Latino | 24 |
| American | 21 |
| Hispanic: Puerto Rican | 16 |
| Italian | 15 |
| Hispanic: Cuban | 8 |
Language
| English Only | 251 |
| Spanish | 0 |
| Population 5+ | 251 |
Veterans
| Veterans | 16 |
| Population 18+ | 212 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Rensselaer, Missouri.