Demographics & People — Londonderry, New Hampshire
Population Overview
| Population (Census) | 12,307 |
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| Estimated 2026 | ~12,000 |
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| Median Age | 42.4 |
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| Total Households | 4,491 |
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| Family Households | 3,263 |
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| Average Household Size | 2.74 |
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| Diversity Index | N/A (N/A) |
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Race & Ethnicity
| White | 11,615 |
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| Black or African American | 49 |
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| Asian | 23 |
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| Hispanic or Latino | 566 |
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Heritage & Ancestry
| Group | Count |
|---|
| Irish | 3,189 |
| Unclassified or not reported | 2,277 |
| English | 1,851 |
| Italian | 1,771 |
| French Canadian | 1,242 |
| French (except Basque) | 1,156 |
| German | 1,131 |
| Other groups | 1,006 |
| Polish | 577 |
| Hispanic: Hispanic or Latino | 460 |
Language
| English Only | 11,088 |
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| Spanish | 369 |
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| Population 5+ | 11,800 |
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Veterans
| Veterans | 801 |
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| Population 18+ | 9,896 |
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Commuting
| Mean Commute Time | 27.7 minutes |
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| Work from Home | 20.4% |
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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 Londonderry, New Hampshire.
