Demographics & People — Lake St. Clair, Missouri
Population Overview
| Population (Census) | 670 |
|---|
| Estimated 2026 | ~1,600 |
|---|
| Median Age | 28.5 |
|---|
| Total Households | 290 |
|---|
| Family Households | 175 |
|---|
| Average Household Size | 2.31 |
|---|
| Diversity Index | 0.0667 (relatively homogeneous) |
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Race & Ethnicity
| White | 587 |
|---|
| Black or African American | 0 |
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| Asian | 0 |
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| Hispanic or Latino | 21 |
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Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 442 |
| German | 173 |
| Other groups | 71 |
| English | 51 |
| French (except Basque) | 49 |
| Irish | 42 |
| Italian | 35 |
| Dutch | 31 |
| Hungarian | 28 |
| Hispanic: Mexican | 12 |
Language
| English Only | 568 |
|---|
| Spanish | 21 |
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| Population 5+ | 589 |
|---|
Veterans
| Veterans | 31 |
|---|
| Population 18+ | 633 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Lake St. Clair, Missouri.
