Marlborough is a city in Middlesex County, Massachusetts, United States. The population was 41,793 at the 2020 census. Marlborough became a prosperous industrial town in the 19th century and made the transition to high technology industry in the late 20th century after the construction of the Massachusetts Turnpike.
Marlborough was declared a town in 1660, and was incorporated as a city in 1890 when it changed its municipal charter from a New England town meeting system to a mayor–council government.
| Ethnicity | Marlborough | USA |
|---|---|---|
| White | 70% | 60.1% |
| African American | 4.3% | 12.2% |
| American Indian | 0% | 0.6% |
| Asian | 5.3% | 5.6% |
| Hawaiian | 0% | 0.2% |
| Multiracial | 2.7% | 2.8% |
| Hispanic | 14.2% | 18.2% |
| Other | 3.5% | 0.3% |
| HOUSEHOLD INCOME | Marlborough | USA |
|---|---|---|
| Less than $10,000 | 2.3% | 5.8% |
| $10,000 to $14,999 | 3.3% | 4.1% |
| $15,000 to $24,999 | 7.1% | 8.5% |
| $25,000 to $34,999 | 5.9% | 8.6% |
| $35,000 to $49,999 | 11.5% | 12.0% |
| $50,000 to $74,999 | 16.8% | 17.2% |
| $75,000 to $99,999 | 11.2% | 12.8% |
| $100,000 to $149,999 | 22.3% | 15.6% |
| $150,000 to $199,999 | 8.8% | 7.1% |
| Education | Marlborough | USA |
|---|---|---|
| < 9th Grade | 5% | 5.0% |
| 9-12th Grade | 5% | 7.0% |
| High School or GED | 26% | 27.0% |
| Other College | 16% | 20.0% |
| Associate's Degree | 8% | 9% |
| Bachelor's Degree | 23% | 20.0% |
| Master's Degree | 14% | 9.0% |
| Professional Degree | 2% | 2.0% |
| Doctorate Degree | 1% | 1.0% |