Demographics & People — St. Peters, Missouri
Population Overview
| Population (Census) | 58,200 |
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| Estimated 2026 | ~61,200 |
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| Median Age | 41.0 |
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| Total Households | 24,009 |
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| Family Households | 15,215 |
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| Average Household Size | 2.41 |
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| Diversity Index | 0.2023 (somewhat diverse) |
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Race & Ethnicity
| White | 49,929 |
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| Black or African American | 3,120 |
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| Asian | 1,403 |
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| Hispanic or Latino | 1,612 |
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Heritage & Ancestry
| Group | Count |
|---|
| German | 18,701 |
| Unclassified or not reported | 12,817 |
| Irish | 10,570 |
| Other groups | 9,320 |
| English | 6,277 |
| Italian | 3,867 |
| American | 3,530 |
| French (except Basque) | 2,284 |
| Polish | 1,860 |
| Hispanic: Hispanic or Latino | 1,402 |
Language
| English Only | 52,206 |
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| Spanish | 806 |
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| Population 5+ | 54,685 |
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Veterans
| Veterans | 3,537 |
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| Population 18+ | 45,119 |
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Commuting
| Mean Commute Time | 22.7 minutes |
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| Work from Home | 17.4% |
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| Commuter Profile | N/A |
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Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for St. Peters, Missouri.
