Demographics & People — Clayton, Missouri
Population Overview
| Population (Census) | 17,282 |
| Estimated 2026 | ~17,600 |
| Median Age | 30.0 |
| Total Households | 5,964 |
| Family Households | 3,201 |
| Average Household Size | 2.14 |
| Diversity Index | 0.4441 (moderately diverse) |
Race & Ethnicity
| White | 11,957 |
| Black or African American | 1,537 |
| Asian | 2,191 |
| Hispanic or Latino | 783 |
Heritage & Ancestry
| Group | Count |
| Other groups | 4,815 |
| German | 3,187 |
| Unclassified or not reported | 2,663 |
| Irish | 2,518 |
| American | 1,583 |
| English | 1,321 |
| Italian | 753 |
| Hispanic: Hispanic or Latino | 585 |
| Eastern European | 531 |
| Polish | 490 |
Language
| English Only | 14,076 |
| Spanish | 378 |
| Population 5+ | 16,854 |
Veterans
| Veterans | 379 |
| Population 18+ | 13,981 |
Commuting
| Mean Commute Time | 16.6 minutes |
| Work from Home | 23.4% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Clayton, Missouri.