Demographics & People — Mountainside, New Jersey
Population Overview
| Population (Census) | 6,967 |
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| Estimated 2026 | ~7,200 |
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| Median Age | 48.0 |
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| Total Households | 2,540 |
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| Family Households | 2,114 |
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| Average Household Size | 2.69 |
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| Diversity Index | 0.4264 (moderately diverse) |
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Race & Ethnicity
| White | 5,245 |
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| Black or African American | 77 |
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| Asian | 859 |
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| Hispanic or Latino | 948 |
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Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 2,066 |
| Italian | 1,288 |
| Irish | 1,050 |
| Unclassified or not reported | 924 |
| German | 910 |
| Hispanic: Hispanic or Latino | 788 |
| Polish | 493 |
| American | 451 |
| Portuguese | 392 |
| English | 320 |
Language
| English Only | 4,847 |
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| Spanish | 458 |
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| Population 5+ | 6,366 |
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Veterans
| Veterans | 279 |
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| Population 18+ | 5,305 |
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Commuting
| Mean Commute Time | 36.0 minutes |
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| Work from Home | 25.1% |
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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 Mountainside, New Jersey.
