Marlborough, Massachusetts Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Marlborough, Massachusetts is 41,398 as of the 2023 American Community Survey, making it the 35th-largest city in Massachusetts. The median household income is $95,047, the median home value is $485,400, and the median age is 37.2.
The population has grown 9.3% since 2010 (38,583 → 42,169).
41,398
Population
1984
People / sq mi
$95,047
Median Income
$485,400
Median Home Value
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Marlborough covers 20.9 sq mi of land at 1984 people per square mile.
About Marlborough, MA
In Marlborough, home values do the distinguishing — a median of $485,400. Marlborough is a city in Massachusetts with a population of 41,398. It ranks #35 among cities in Massachusetts by population.
Median household income is $95,047, above the US median of $78,538. The poverty rate is 6.6%, below the national 12.4%. The median home value is $485,400, with typical rent around $1,721.
40.6% of adults 25 and older hold a bachelor’s degree, above the national average of 35.0%. About 16.1% of workers primarily work from home, above the national 14.0%, and the average commute runs about 29 minutes each way.
High housing values reframe the income picture in Marlborough — even solid earnings stretch less against home prices and rents at this level.
Marlborough city Population History (2010-2024)
The city of Marlborough city had a population of 38,583 in 2010 and 42,169 in 2024, a 9.3% growth over 14 years. The peak was 42,169 in 2024. Average annual growth rate: 0.65%.
42,169
Population (2024)
38,583
Population (2010)
42,169
Peak (2024)
0.65%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 38,583 |
| 2011 | 38,940 |
| 2012 | 39,307 |
| 2013 | 39,468 |
| 2014 | 39,691 |
| 2015 | 39,797 |
| 2016 | 39,782 |
| 2017 | 39,791 |
| 2018 | 39,716 |
| 2019 | 39,597 |
| 2020 | 41,685 |
| 2021 | 41,244 |
| 2022 | 41,406 |
| 2023 | 41,784 |
| 2024 | 42,169 |
Race & Ethnicity
| White | 60.9% |
| Black or African American | 3.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.0% |
| Two or More Races | 0.0% |
Economy & Income
$95,047
Median Household Income
$46,876
Per Capita Income
6.6%
Poverty Rate
4.0%
Unemployment Rate
Housing
$485,400
Median Home Value
$1,721
Median Rent
56.2%
Owner-Occupied
Education
89.1%
High School+
40.6%
Bachelor's+
Commute
0.7%
Drive Alone
66.6%
Public Transit
16.1%
Work From Home
29.4 min
Avg Commute
Community Profile
16.4%
Foreign Born
59.7%
Non-English at Home
4.3%
Veterans
10.5%
With Disability
96.1%
Health Insurance
94.7%
Internet Access
Employment by Industry
| Finance, Insurance & Real Estate | 17.6% |
| Professional, Scientific & Management | 17.3% |
| Manufacturing | 14.4% |
| Construction | 9.1% |
| Education, Health Care & Social Services | 8.0% |
| Arts, Entertainment & Food Services | 5.4% |
| Information | 5.0% |
| Retail Trade | 3.4% |
| Transportation & Warehousing | 3.2% |
| Public Administration | 2.5% |
| Agriculture & Mining | 0.8% |
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Frequently Asked Questions
Marlborough, Massachusetts has a population of 41,398 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 35th-largest city in Massachusetts.
The median household income in Marlborough, Massachusetts is $95,047, with 6.6% of residents living below the federal poverty level.
The median home value in Marlborough, Massachusetts is $485,400, with median monthly rent at $1,721 and a homeownership rate of 56.2%.
The median age in Marlborough, Massachusetts is 37.2 years. The population is 48.5% male and 51.5% female.
The population has grown 9.3% since 2010 (38,583 → 42,169).
Marlborough city, MA Climate
Marlborough city, MA has an average annual temperature of 8.9°C (48°F) and receives about 1194 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
8.9°C
Avg Temp
1194
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -4° / 24° | 99 mm |
| February | -3° / 26° | 88 mm |
| March | 2° / 35° | 103 mm |
| April | 7° / 45° | 101 mm |
| May | 13° / 56° | 95 mm |
| June | 18° / 65° | 95 mm |
| July | 22° / 71° | 97 mm |
| August | 21° / 70° | 101 mm |
| September | 17° / 62° | 92 mm |
| October | 10° / 51° | 102 mm |
| November | 5° / 42° | 116 mm |
| December | -1° / 30° | 105 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Marlborough city, MA
The most comfortable months to visit Marlborough city, MA are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -10°C low). November is usually the wettest month.
Where to stay near Marlborough
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.