Demographics & People — St. John, Indiana
Population Overview
| Population (Census) | 21,639 |
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| Estimated 2026 | ~24,900 |
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| Median Age | 42.3 |
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| Total Households | 7,522 |
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| Family Households | 6,140 |
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| Average Household Size | 2.87 |
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| Diversity Index | 0.2781 (somewhat diverse) |
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Race & Ethnicity
| White | 18,267 |
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| Black or African American | 598 |
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| Asian | 525 |
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| Hispanic or Latino | 2,299 |
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Heritage & Ancestry
| Group | Count |
|---|
| German | 4,681 |
| Other groups | 3,757 |
| Polish | 3,694 |
| Unclassified or not reported | 3,086 |
| Irish | 2,793 |
| Hispanic: Hispanic or Latino | 2,579 |
| Italian | 2,249 |
| English | 1,939 |
| Hispanic: Mexican | 1,919 |
| Dutch | 1,503 |
Language
| English Only | 18,058 |
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| Spanish | 1,073 |
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| Population 5+ | 20,512 |
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Veterans
| Veterans | 781 |
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| Population 18+ | 15,753 |
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Commuting
| Mean Commute Time | 31.2 minutes |
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| Work from Home | 12.5% |
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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. John, Indiana.
