Demographics & People — Alton, New Hampshire
Population Overview
| Population (Census) | 416 |
| Estimated 2026 | ~100 |
| Median Age | 58.4 |
| Total Households | 179 |
| Family Households | 90 |
| Average Household Size | 2.32 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 383 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 80 |
Heritage & Ancestry
| Group | Count |
| Hispanic: Mexican | 49 |
| Hispanic: Hispanic or Latino | 49 |
| Portuguese | 46 |
| Unclassified or not reported | 44 |
| Irish | 41 |
| American | 39 |
| English | 27 |
| Ukrainian | 25 |
| French (except Basque) | 21 |
| Italian | 14 |
Language
| English Only | 416 |
| Spanish | 0 |
| Population 5+ | 416 |
Veterans
| Veterans | 0 |
| Population 18+ | 170 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013 (county fallback). Data for Alton, New Hampshire.