Marlborough, Massachusetts Demographics & Population 2026
During the 2020–2024 ACS period, Marlborough, Massachusetts had a total population of 41,647, the 36th largest city in Massachusetts, with a median household income of $91,968, which is 12% lower than the state average. The poverty rate is 9.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Marlborough Quick Facts
How Marlborough Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 41,398 | 41,647 | +0.6% |
| Median household income | $95,047 | $91,968 | -3.2% |
| Median home value | $485,400 | $513,100 | +5.7% |
How Marlborough Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 53 | National average: 61
Education
Educational Attainment (Adults 25+)
Marlborough Rankings in Massachusetts
Explore Massachusetts Rankings
Other Cities in Middlesex County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Cambridge | 118,796 | $130,748 | 12.8% | $1,092,100 |
| Lowell | 118,368 | $78,658 | 16.9% | $429,200 |
| Newton | 89,044 | $190,304 | 4.5% | $1,264,900 |
| Somerville | 81,036 | $132,572 | 9.8% | $911,300 |
| Framingham | 72,399 | $107,419 | 10.4% | $627,300 |
| Malden | 65,906 | $100,606 | 11.4% | $633,500 |
| Waltham | 64,902 | $120,216 | 9.4% | $748,700 |
| Medford | 59,354 | $129,540 | 7.6% | $755,500 |
| Everett | 50,045 | $85,218 | 14.7% | $610,000 |
| Arlington | 46,350 | $150,701 | 5.4% | $933,800 |
Cities Similar to Marlborough
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Westfield | 40,378 | $87,753 | $325,100 | 33.2% | 10.7% |
| Beverly | 42,665 | $106,044 | $650,300 | 53.4% | 9.4% |
| Leominster | 43,909 | $83,816 | $380,400 | 33.5% | 9.2% |
| Woburn | 41,939 | $111,185 | $673,500 | 46.5% | 7.9% |
| Salem | 44,795 | $85,153 | $542,800 | 47.8% | 12.1% |
Population Overview
Marlborough is a mid-sized community located in Massachusetts, within Middlesex County. The total population is 41,647. It ranks as the 36th most populous out of 248 Census-designated places in Massachusetts.
Age Demographics
The median age in Marlborough is 37.5 years. This is 6% lower than the state median of 40.0 years.
Economy, Income & Housing
The median household income in Marlborough is $91,968. This is 12% lower than the state median of $103,960. It is also 14% higher than the national median of $80,734. The poverty rate stands at 9.6%. This is 4% lower than the state poverty rate of 10.0%. The unemployment rate is 5.5%. This is 6% higher than the state rate of 5.1%. The median home value is $513,100. Housing costs are 9% lower than the state median of $562,100. The home-value-to-income ratio is 5.6x. 56.0% of occupied housing units are owner-occupied. This homeownership rate is 10% lower than the state average of 62.5%.
Race & Ethnicity
The largest racial or ethnic group in Marlborough is White (non-Hispanic), making up 54.1% of the population. Hispanic or Latino residents account for 17.9%.
Education
40.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 14% lower than the state rate of 47.3%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.9%. Notably, 16.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Marlborough, Massachusetts is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Massachusetts state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 248 Census-designated places in Massachusetts. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Marlborough, Massachusetts?
Marlborough, Massachusetts has a population of 41,647 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Marlborough, MA?
The median household income in Marlborough is $91,968, which is 14% higher than the national median of $80,734.
What is the poverty rate in Marlborough, MA?
The poverty rate in Marlborough is 9.6%. This means approximately 3,948 residents live below the federal poverty line.
What is the racial makeup of Marlborough, Massachusetts?
Marlborough's population is 54.1% White, 3.7% Black, 17.9% Hispanic/Latino, and 5.3% Asian.
What is the median home value in Marlborough, MA?
The median home value in Marlborough is $513,100. The home-value-to-income ratio is 5.6x.
How educated is Marlborough, Massachusetts?
40.5% of adults (25+) in Marlborough hold a bachelor's degree or higher, and 16.2% hold a graduate or professional degree.