Marlborough - Stow, Middlesex County, MA demographics:
population, income, and more

Total population
279,845
0.8% year-over-year change
Median household income
$138,563/yr
2.9% year-over-year change
Housing units
111,820
0.2% year-over-year change

Marlborough - Stow population

How many people live in Marlborough - Stow

Marlborough - Stow is home to 279,845 residents, according to the most recent Census data. Gender-wise, 49.6% of Marlborough - Stow locals are male, and 50.4% are female.

Total population
279,845
0.8% year-over-year change
Gender ratio
Male
49.6%
138,742
Female
50.4%
141,103
Value Percent YoY change
Male 138,742 49.6% 1.2%
Female 141,103 50.4% 0.3%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Marlborough - Stow is 43, with the population distributed as follows: about 18.5% are children under 15, then 11% are in the 15 to 24 age group. Adults between 25 and 44 make up 26.5% of the population, while another 27.2% fall into the 45 to 64 bracket. Finally, around 16.8% are 65 or older.

Median age
42.8
Age breakdown
Under 15
18.5%
15 to 24
11%
25 to 44
26.5%
45 to 64
27.2%
Over 65
16.8%
Value Percent YoY change
Under 15 51,769 18.5% -0.5%
15 to 24 30,720 11% -0.5%
25 to 44 74,120 26.5% 2.2%
45 to 64 76,117 27.2% -0.4%
Over 65 47,119 16.8% 2.5%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Marlborough - Stow, 74.4% of the population are US-born citizens, while 12.2% have gained naturalized citizenship. At the same time, 13.4% of residents are non-citizens. As for race, 67.2% of locals are Caucasian, 3% are African American and 9.6% have Asian roots. There’s also a share of 13.2% that includes residents with two or more races.

Citizenship
U.S.-born citizens
74.4%
Non-U.S.-born citizens
12.2%
Non-citizens
13.4%
Value Percent YoY change
U.S.-born citizens 208,286 74.4% -0.6%
Non-U.S.-born citizens 34,207 12.2% 1.3%
Non-citizens 37,352 13.4% 8.3%
Racial breakdown
White
67.2%
Black or African American
3%
American Indian and Alaska Native
0.2%
Asian
9.6%
Native Hawaiian and other Pacific Islander
0%
Two or more races
13.2%
Other
6.6%
Value Percent
White 188,046 67.2%
Black or African American 8,513 3%
American Indian and Alaska Native 641 0.2%
Asian 26,960 9.6%
Native Hawaiian and other Pacific Islander 141 0%
Two or more races 36,957 13.2%
Other 18,587 6.6%

Households in Marlborough - Stow

A peek inside Marlborough - Stow households

Marlborough - Stow has 107,589 households, with an average of 3 members in each. Of these, 69.7% are families, while the remaining 30.3% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
107,589
-0.0% year-over-year change
Average people per household
3
Non-family households
32,579
Family households
75,010
Value Percent YoY change
Non-family households 32,579 30.3% -1.7%
Family households 75,010 69.7% 0.8%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Marlborough - Stow

The housing landscape of Marlborough - Stow

Marlborough - Stow's housing consists of 111,820 units, with 59.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 7.2% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.8% of the housing landscape.

Housing units
111,820
0.2% year-over-year change
Housing types
Value Percent
1 unit, detached 66,194 59.2%
1 unit, attached 8,097 7.2%
2 units 5,364 4.8%
3 or 4 units 6,630 5.9%
5 to 9 units 4,061 3.6%
10 to 19 units 6,239 5.6%
20 to 49 units 5,969 5.3%
50 or more units 8,374 7.5%
Mobile home 881 0.8%
Boat, RV, van, etc. 11 0%
Homes built since 2020
1,290
74.6% year-over-year change

The age of buildings in Marlborough - Stow

In Marlborough - Stow, the median construction year is 1970. About 18.5% of homes were built before the 1940s, with another 3.8% going up by 1949. Most development happened in the second half of the 20th century. Then, 6.9% of homes were added from 2000 to 2009, 9% between 2010 and 2019, and 1.2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 20,641 18.5% 3.0%
Built between 1940 and 1949 4,190 3.8% -12.4%
Built between 1950 and 1959 14,720 13.2% -7.4%
Built between 1960 and 1969 15,937 14.2% -4.6%
Built between 1970 and 1979 12,906 11.5% -0.6%
Built between 1980 and 1989 13,848 12.4% 1.2%
Built between 1990 and 1999 10,420 9.3% 2.8%
Built between 2000 and 2009 7,755 6.9% 0.4%
Built between 2010 and 2019 10,113 9% 13.1%
Built in 2020 or later 1,290 1.2% 74.6%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Marlborough - Stow occupancy rates

Out of the 107,589 occupied housing units in Marlborough - Stow, 69.2% are owner-occupied, while 30.8% are lived in by tenants. Meanwhile, 3.8% of all homes on the local market sit vacant.

Occupied housing units
107,589
-0.0% year-over-year change
Occupancy breakdown
Renter occupied
33,090
Owner occupied
74,499
Value Percent YoY
change
Renter occupied 33,090 30.8% 0.1%
Owner occupied 74,499 69.2% -0.1%
Unoccupied housing units
3.8%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Marlborough - Stow housing costs

Housing costs in Marlborough - Stow come to a median of $2,384 per month, while tenants specifically pay a median gross rent of $1,871.

Median housing costs per month
$2,384/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Marlborough - Stow
$1,871/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Marlborough - Stow

Marlborough - Stow education at a glance

About 22.4% of the population in Marlborough - Stow went to high school, while 13.1% pursued college studies. Another 5.1% earned an associate degree and 29.9% hold a bachelor’s. Meanwhile, 26.1% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 7,424 3.4% 15.8%
High school diploma 48,788 22.4% 1.0%
College diploma 28,434 13.1% -0.6%
Associate degree 11,191 5.1% -4.2%
Bachelor's degree 65,031 29.9% 1.4%
Graduate degree 56,767 26.1% 1.5%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Marlborough - Stow

How much people earn in Marlborough - Stow

The average annual household income in Marlborough - Stow was $217,348 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +1.9% change from the previous year. At the same time, the median income stood at $138,563, reflecting a +2.9% shift over the same period.

Average household income in Marlborough - Stow
$217,348/year
1.9% year-over-year change
Median household income in Marlborough - Stow
$138,563/year
2.9% year-over-year change

Marlborough - Stow income by age

In Marlborough - Stow, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $178,828. Those with someone between 45 and 64 in charge, often well established professionally, earn $202,656 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $75,532, while those led by someone over 65, many of whom may be retired, have about $91,071 in earnings. Overall, 93.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $75,532 5.1%
25 - 44 $178,828 5.3%
45 - 64 $202,656 2.4%
Over 65 $91,071 6.0%
Above poverty level
254,075
Below poverty level
18,421
Value Percent YoY
change
Above poverty level 254,075 93.2% 0.6%
Below poverty level 18,421 6.8% 0.5%

Employment in Marlborough - Stow

Workforce and job types in Marlborough - Stow

87% of the working population are employed in professional or administrative positions, while 13% are in hands-on or service-based jobs. Also, 11.3% run their own businesses, 67.3% are employed by private companies, and 10.5% work in the public sector.

Workforce demographics

White collar
131,202
Blue collar
19,657
Value Percent YoY change
White collar 131,202 87% 0.7%
Blue collar 19,657 13% 2.2%
Employer type
Self employees
11.3%
Private companies
67.3%
Governmental workers
10.5%
Not for profit companies
10.9%
Value Percent YoY change
Self employees 17,064 11.3% 0.3%
Private companies 101,521 67.3% 1.0%
Governmental workers 15,828 10.5% -0.1%
Not for profit companies 16,446 10.9% 2.2%

Transportation in Marlborough - Stow

How people get around in Marlborough - Stow

In Marlborough - Stow, the average commute time is 125 minutes. Commuting methods vary: 93.2% of residents travel by personal vehicle and 2.8% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
125 min
2.5% year-over-year change
Means of transportation
Value Percent YoY change
Car 99,796 93.2% -2.6%
Taxicab 551 0.5% 32.1%
Bus or trolleybus 501 0.5% -16.6%
Railroad 2,810 2.6% -9.2%
Ferryboat 10 0% 11.1%
Motorcycle 73 0.1% 7.3%
Bicycle 373 0.4% -5.1%
Walk 2,960 2.8% 7.4%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

Find your place

Explore more communities

FAQs about Marlborough - Stow demographics 

What is the total population of Marlborough - Stow?

Marlborough - Stow has a total population of 279,845 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.8% compared to a year ago.

What is the gender ratio in Marlborough - Stow?

The gender ratio in Marlborough - Stow is as follows:
  • 49.6% males (138,742 residents)
  • 50.4% females (141,103 residents)

What is the median age in Marlborough - Stow?

The median age in Marlborough - Stow is 42.8.

What is the age distribution of the population in Marlborough - Stow?

The age distribution in Marlborough - Stow is as follows:
  • Under 15: 18.5% (51,769 residents)
  • Ages 15-24: 11% (30,720 residents)
  • Ages 25-44: 26.5% (74,120 residents)
  • Ages 45-64: 27.2% (76,117 residents)
  • Over 65: 16.8% (47,119 residents)

What is the racial and ethnic makeup of Marlborough - Stow?

The racial and ethnic makeup of Marlborough - Stow is as follows:
  • White: 67.2% (188,046 residents)
  • Black or African American: 3% (8,513 residents)
  • American Indian and Alaska Native: 0.2% (641 residents)
  • Asian: 9.6% (26,960 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (141 residents)
  • Two or More Races: 13.2% (36,957 residents)
  • Other: 6.6% (18,587 residents)

What percentage of the population in Marlborough - Stow are U.S.-born citizens?

U.S.-born citizens represent 74.4% of the population in Marlborough - Stow.

How many housing units are there in Marlborough - Stow?

There are 111,820 housing units in Marlborough - Stow, reflecting a +0.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Marlborough - Stow and what is the average household size?

Marlborough - Stow has a total of 107,589 households, with an average of 3 people in each.

What is the median household income in Marlborough - Stow?

Marlborough - Stow has a median household income of $138,563, representing a +2.9% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Marlborough - Stow?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 87% (131,202 residents)
  • Blue-collar workers: 13% (19,657 residents)

Places of employment:
  • Self-employed: 11.3% (17,064 residents)
  • Private companies: 67.3% (101,521 residents)
  • Governmental workers: 10.5% (15,828 residents)
  • Not-for-profit companies: 10.9% (16,446 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025