Marlborough Town, CT demographics:
population, income, and more

Total population
6,130
0.4% year-over-year change
Median household income
$142,105/yr
1.5% year-over-year change
Housing units
2,253
2.0% year-over-year change

Marlborough population

How many people live in Marlborough

Marlborough is home to 6,130 residents, according to the most recent Census data. Gender-wise, 49.6% of Marlborough locals are male, and 50.4% are female.

Total population
6,130
0.4% year-over-year change
Gender ratio
Male
49.6%
3,041
Female
50.4%
3,089
Value Percent YoY change
Male 3,041 49.6% 1.4%
Female 3,089 50.4% -0.6%
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 is 42, with the population distributed as follows: about 18.3% are children under 15, then 10.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 24% of the population, while another 31.2% fall into the 45 to 64 bracket. Finally, around 16.3% are 65 or older.

Median age
41.8
Age breakdown
Under 15
18.3%
15 to 24
10.3%
25 to 44
24%
45 to 64
31.2%
Over 65
16.3%
Value Percent YoY change
Under 15 1,121 18.3% 1.4%
15 to 24 631 10.3% -6.9%
25 to 44 1,471 24% 2.9%
45 to 64 1,910 31.2% 2.8%
Over 65 997 16.3% -3.8%
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, 91.7% of the population are US-born citizens, while 5.7% have gained naturalized citizenship. At the same time, 2.6% of residents are non-citizens. As for race, 82.2% of locals are Caucasian, 1.9% are African American and 5% have Asian roots. There’s also a share of 10% that includes residents with two or more races.

Citizenship
U.S.-born citizens
91.7%
Non-U.S.-born citizens
5.7%
Non-citizens
2.6%
Value Percent YoY change
U.S.-born citizens 5,621 91.7% -0.4%
Non-U.S.-born citizens 348 5.7% 4.5%
Non-citizens 161 2.6% 23.9%
Racial breakdown
White
82.2%
Black or African American
1.9%
American Indian and Alaska Native
0%
Asian
5%
Native Hawaiian and other Pacific Islander
0%
Two or more races
10%
Other
1%
Value Percent
White 5,039 82.2%
Black or African American 114 1.9%
Asian 307 5%
Two or more races 612 10%
Other 58 1%

Households in Marlborough

A peek inside Marlborough households

Marlborough has 2,184 households, with an average of 3 members in each. Of these, 85.3% are families, while the remaining 14.7% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
2,184
1.5% year-over-year change
Average people per household
3
Non-family households
321
Family households
1,863
Value Percent YoY change
Non-family households 321 14.7% -1.8%
Family households 1,863 85.3% 2.1%
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

The housing landscape of Marlborough

Marlborough's housing consists of 2,253 units, with 89.8% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5.5% 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 0.7% of the housing landscape.

Housing units
2,253
2.0% year-over-year change
Housing types
Value Percent
1 unit, detached 2,023 89.8%
1 unit, attached 123 5.5%
3 or 4 units 41 1.8%
20 to 49 units 50 2.2%
Mobile home 16 0.7%
Homes built since 2020
14
% year-over-year change

The age of buildings in Marlborough

In Marlborough, the median construction year is 1977. About 7.4% of homes were built before the 1940s, with another 3.3% going up by 1949. Most development happened in the second half of the 20th century. Then, 14.4% of homes were added from 2000 to 2009, 1.4% between 2010 and 2019, and 0.6% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 166 7.4% 32.8%
Built between 1940 and 1949 75 3.3% 2.7%
Built between 1950 and 1959 304 13.5% 3.4%
Built between 1960 and 1969 178 7.9% 89.4%
Built between 1970 and 1979 611 27.1% -12.5%
Built between 1980 and 1989 398 17.7% -4.3%
Built between 1990 and 1999 151 6.7% -31.4%
Built between 2000 and 2009 324 14.4% 27.6%
Built between 2010 and 2019 32 1.4% -5.9%
Built in 2020 or later 14 0.6% N/A
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 occupancy rates

Out of the 2,184 occupied housing units in Marlborough, 92.6% are owner-occupied, while 7.4% are lived in by tenants. Meanwhile, 3.1% of all homes on the local market sit vacant.

Occupied housing units
2,184
1.5% year-over-year change
Occupancy breakdown
Renter occupied
161
Owner occupied
2,023
Value Percent YoY
change
Renter occupied 161 7.4% -23.7%
Owner occupied 2,023 92.6% 4.3%
Unoccupied housing units
3.1%
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 housing costs

Housing costs in Marlborough come to a median of $2,199 per month, while tenants specifically pay a median gross rent of $1,333.

Median housing costs per month
$2,199/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
$1,333/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

Marlborough education at a glance

About 22.8% of the population in Marlborough went to high school, while 22.6% pursued college studies. Another 8.1% earned an associate degree and 25.2% hold a bachelor’s. Meanwhile, 19.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 71 1.5% -22.8%
High school diploma 1,069 22.8% 16.6%
College diploma 1,060 22.6% 3.4%
Associate degree 378 8.1% 0.0%
Bachelor's degree 1,178 25.2% -15.3%
Graduate degree 926 19.8% 8.9%
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

How much people earn in Marlborough

The average annual household income in Marlborough was $169,394 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -6% change from the previous year. At the same time, the median income stood at $142,105, reflecting a +1.5% shift over the same period.

Average household income in Marlborough
$169,394/year
-6.0% year-over-year change
Median household income in Marlborough
$142,105/year
1.5% year-over-year change

Marlborough income by age

In Marlborough, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $146,708. Those with someone between 45 and 64 in charge, often well established professionally, earn $161,853 overall. Overall, 90.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $146,708 -8.9%
45 - 64 $161,853 1.6%
Over 65 $77,402 -4.3%
Above poverty level
5,386
Below poverty level
582
Value Percent YoY
change
Above poverty level 5,386 90.2% 0.2%
Below poverty level 582 9.8% 5.6%

Employment in Marlborough

Workforce and job types in Marlborough

86.6% of the working population are employed in professional or administrative positions, while 13.4% are in hands-on or service-based jobs. Also, 13.2% run their own businesses, 60.6% are employed by private companies, and 11% work in the public sector.

Workforce demographics

White collar
2,884
Blue collar
448
Value Percent YoY change
White collar 2,884 86.6% 4.2%
Blue collar 448 13.4% 10.6%
Employer type
Self employees
13.2%
Private companies
60.6%
Governmental workers
11%
Not for profit companies
15.2%
Value Percent YoY change
Self employees 438 13.2% 32.3%
Private companies 2,018 60.6% 1.6%
Governmental workers 368 11% -4.9%
Not for profit companies 508 15.2% 8.8%

Transportation in Marlborough

How people get around in Marlborough

Commuting methods vary: 97.9% of residents travel by personal vehicle and 1% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 2,092 97.9% -1.8%
Bicycle 24 1.1% 14.3%
Walk 21 1% 0.0%
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.

What is the median and average household income in Marlborough by zipcode?

Zipcode Population Number of households Median income Average income
06447 6,130 2,184 $142,105 $169,394

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FAQs about Marlborough demographics 

What is the total population of Marlborough?

Marlborough has a total population of 6,130 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 +0.4% compared to a year ago.

What is the gender ratio in Marlborough?

The gender ratio in Marlborough is as follows:
  • 49.6% males (3,041 residents)
  • 50.4% females (3,089 residents)

What is the median age in Marlborough?

The median age in Marlborough is 41.8.

What is the age distribution of the population in Marlborough?

The age distribution in Marlborough is as follows:
  • Under 15: 18.3% (1,121 residents)
  • Ages 15-24: 10.3% (631 residents)
  • Ages 25-44: 24% (1,471 residents)
  • Ages 45-64: 31.2% (1,910 residents)
  • Over 65: 16.3% (997 residents)

What is the racial and ethnic makeup of Marlborough?

The racial and ethnic makeup of Marlborough is as follows:
  • White: 82.2% (5,039 residents)
  • Black or African American: 1.9% (114 residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 5% (307 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 10% (612 residents)
  • Other: 1% (58 residents)

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

U.S.-born citizens represent 91.7% of the population in Marlborough.

How many housing units are there in Marlborough?

There are 2,253 housing units in Marlborough, reflecting a +2.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Marlborough has a total of 2,184 households, with an average of 3 people in each.

What is the median household income in Marlborough?

Marlborough has a median household income of $142,105, representing a +1.5% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Marlborough?

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

Job types:
  • White-collar workers: 86.6% (2,884 residents)
  • Blue-collar workers: 13.4% (448 residents)

Places of employment:
  • Self-employed: 13.2% (438 residents)
  • Private companies: 60.6% (2,018 residents)
  • Governmental workers: 11% (368 residents)
  • Not-for-profit companies: 15.2% (508 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