Demographics & People — Marlborough, Massachusetts
Population Overview
| Population (Census) | 41,398 |
| Estimated 2026 | ~42,200 |
| Median Age | 37.5 |
| Total Households | 16,649 |
| Family Households | 10,417 |
| Average Household Size | 2.45 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 25,198 |
| Black or African American | 1,512 |
| Asian | 2,027 |
| Hispanic or Latino | 6,975 |
Heritage & Ancestry
| Group | Count |
| Other groups | 8,595 |
| Unclassified or not reported | 7,932 |
| Hispanic: Hispanic or Latino | 7,010 |
| Irish | 6,496 |
| Italian | 5,036 |
| Brazilian | 4,466 |
| Hispanic: Central American | 3,363 |
| Hispanic: Guatemalan | 3,108 |
| English | 3,089 |
| German | 2,280 |
Language
| English Only | 22,875 |
| Spanish | 5,765 |
| Population 5+ | 38,335 |
Veterans
| Veterans | 1,548 |
| Population 18+ | 32,948 |
Commuting
| Mean Commute Time | 29.7 minutes |
| Work from Home | 16.2% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Marlborough, Massachusetts.