Demographics & People — Cave-In-Rock, Illinois
Population Overview
| Population (Census) | 229 |
| Estimated 2026 | ~200 |
| Median Age | 60.6 |
| Total Households | 105 |
| Family Households | 45 |
| Average Household Size | 2.18 |
| Diversity Index | 0.026 (relatively homogeneous) |
Race & Ethnicity
| White | 225 |
| Black or African American | 2 |
| Asian | 0 |
| Hispanic or Latino | 1 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 108 |
| Other groups | 36 |
| English | 22 |
| German | 16 |
| West Indian (except Hispanic groups) | 12 |
| Irish | 12 |
| Jamaican | 12 |
| Welsh | 6 |
| Russian | 6 |
| Dutch | 5 |
Language
| English Only | 228 |
| Spanish | 1 |
| Population 5+ | 229 |
Veterans
| Veterans | 18 |
| Population 18+ | 177 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Cave-In-Rock, Illinois.