Demographics & People — St. Joseph, Illinois
Population Overview
| Population (Census) | 3,833 |
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| Estimated 2026 | ~3,700 |
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| Median Age | 37.9 |
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| Total Households | 1,503 |
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| Family Households | 914 |
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| Average Household Size | 2.54 |
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| Diversity Index | 0.0748 (relatively homogeneous) |
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Race & Ethnicity
| White | 3,570 |
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| Black or African American | 2 |
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| Asian | 79 |
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| Hispanic or Latino | 62 |
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Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 1,309 |
| German | 1,100 |
| English | 576 |
| Other groups | 563 |
| Irish | 412 |
| Italian | 253 |
| American | 182 |
| French (except Basque) | 83 |
| Hispanic: Hispanic or Latino | 76 |
| Polish | 57 |
Language
| English Only | 3,419 |
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| Spanish | 94 |
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| Population 5+ | 3,675 |
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Veterans
| Veterans | 190 |
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| Population 18+ | 2,845 |
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Commuting
| Mean Commute Time | 24.7 minutes |
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| Work from Home | 17.2% |
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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. Joseph, Illinois.
