Demographics & People — Marble Hill, Missouri
Population Overview
| Population (Census) | 1,781 |
| Estimated 2026 | ~1,700 |
| Median Age | 28.8 |
| Total Households | 575 |
| Family Households | 337 |
| Average Household Size | 2.92 |
| Diversity Index | 0.0861 (relatively homogeneous) |
Race & Ethnicity
| White | 1,647 |
| Black or African American | 20 |
| Asian | 0 |
| Hispanic or Latino | 57 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 961 |
| Irish | 301 |
| Other groups | 279 |
| German | 271 |
| American | 184 |
| English | 87 |
| Hispanic: Hispanic or Latino | 56 |
| Italian | 27 |
| Hispanic: Ecuadorian | 27 |
| Hispanic: South American | 27 |
Language
| English Only | 1,607 |
| Spanish | 3 |
| Population 5+ | 1,610 |
Veterans
| Veterans | 81 |
| Population 18+ | 1,171 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Marble Hill, Missouri.