Demographics of Marlborough town, Connecticut

Marlborough town, Connecticut had 6,213 people on July 1, 2025, by the Census Bureau’s estimate: +107 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Marlborough town, in four figures

6,213
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 6,130 ±33.; +1.8%
Change since July 2020: +107 people.; 41.8 ±4.7
Median age: ACS 2020–⁠2024.; $142,105 ±$35,140
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a town, so the change is the difference between one July estimate and the next.

Marlborough town, Connecticut's population grew 1.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Marlborough town, Connecticut's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Marlborough town, Connecticut's population grew 1.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Marlborough town, Connecticut's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	6,106	100.0	100.0
2021	6,120	100.2	100.2
2022	6,127	100.3	100.7
2023	6,152	100.8	101.6
2024	6,194	101.4	102.5
2025	6,213	101.8	103.1

Population of Marlborough town, Connecticut on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	6,106	—
2021	6,120	+14
2022	6,127	+7
2023	6,152	+25
2024	6,194	+42
2025	6,213	+19

Age, 2020–2024

The median age is 41.8 ±4.7: for men 41.1 ±4.6 and for women 43.2 ±7.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

2 more columns on a wider screen

People in Marlborough town by age, ACS 2020–2024
Age	People	Share	Connecticut	United States
Under 5	292 ±125	4.8% ±2.0	5.0% ±<0.1	5.6% ±<0.1
5 to 17	1,156 ±296	18.9% ±4.8	15.2% ±0.1	16.3% ±<0.1
18 to 24	142 to 466	2.3% to 7.6%	9.3% ±0.1	9.1% ±<0.1
25 to 44	1,471 ±280	24.0% ±4.6	25.3% ±0.1	26.9% ±<0.1
45 to 64	1,910 ±395	31.2% ±6.4	26.7% ±0.1	24.8% ±<0.1
65 and over	997 ±216	16.3% ±3.5	18.5% ±0.1	17.2% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Income and poverty, 2020–2024

Median household income is $142,105 ±$35,140, and income per person $60,414 ±$8,779, in 2024 dollars. The median is $95,781 ±$732 in Connecticut and $80,734 ±$166 in the United States.

Households by income

2 more columns on a wider screen

Households in Marlborough town by income, ACS 2020–2024
Household income	Households	Share	Connecticut	United States
Under $25,000	0 to 143	0% to 6.5%	12.9% ±0.3	14.6% ±<0.1
$25,000 to $49,999	38 to 176	1.8% to 8.0%	13.7% ±0.3	16.7% ±<0.1
$50,000 to $74,999	174 to 594	8.1% to 27.1%	13.3% ±0.3	15.5% ±<0.1
$75,000 to $99,999	57 to 269	2.6% to 12.3%	11.9% ±0.3	12.6% ±<0.1
$100,000 to $149,999	491 ±176	22.5% ±7.9	17.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	242 ±118	11.1% ±5.3	11.3% ±0.2	9.6% ±<0.1
$200,000 or more	727 ±189	33.3% ±8.3	19.2% ±0.3	13.4% ±0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

2 more columns on a wider screen

Poverty rate in Marlborough town by age, ACS 2020–2024
Age	Below poverty	Rate	Connecticut	United States
All ages	117 to 1,047	1.9% to 17.4%	10.0% ±0.2	12.5% ±0.1
Under 18	0 to 257	0% to 17.8%	13.0% ±0.5	16.1% ±0.1
18 to 59	76 to 800	2.4% to 23.5%	9.4% ±0.3	11.6% ±0.1
60 and over	0 to 52	0% to 4.2%	8.9% ±0.3	11.0% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Housing, 2020–2024

1 more column on a wider screen

Housing in Marlborough town, ACS 2020–2024
Measure	Marlborough town	Connecticut	United States
Housing units	2,253 ±194	1,541,822 ±276	143,775,355 ±10,234
Occupied	96.9% ±10.9	93.0% ±0.2	89.9% ±0.1
Vacant	0% to 7.0%	7.0% ±0.2	10.1% ±0.1
Owner occupied	92.6% ±1.5	66.5% ±0.4	65.2% ±0.3
Renter occupied	3.6% to 11.2%	33.5% ±0.3	34.8% ±0.1
Median home value	$379,100 ±$32,505	$366,900 ±$1,621	$332,700 ±$236
Median gross rent	$1,333 ±$438	$1,488 ±$10	$1,413 ±$2
Median year built	1977 ±3	1967 ±1	1980 ±1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

2 more columns on a wider screen

People in Marlborough town by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Connecticut	United States
Hispanic or Latino	55 to 1,175	0.9% to 19.2%	18.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	5,015 ±538	81.8% ±8.8	61.9% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 243	0% to 4.0%	9.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	13 to 601	0.2% to 9.8%	4.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 19	0% to 0.3%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 19	0% to 0.3%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 36	0% to 0.6%	0.9% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	0 to 132	0% to 2.2%	4.3% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

2 more columns on a wider screen

People in Marlborough town by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Connecticut	United States
Born in the state	3,968 ±362	64.7% ±5.9	53.3% ±0.3	57.3% ±<0.1
Born in another state	1,653 ±340	27.0% ±5.5	27.1% ±0.2	26.9% ±<0.1
Born a citizen outside the states	20 to 288	0.3% to 4.7%	3.9% ±0.1	1.7% ±<0.1
Born abroad	154 to 556	2.5% to 9.1%	15.7% ±0.2	14.1% ±<0.1
Naturalized citizens	75 to 313	1.2% to 5.1%	8.7% ±0.1	7.4% ±<0.1
Not citizens	32 to 290	0.5% to 4.7%	7.1% ±0.2	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Marlborough town among the places and towns of Connecticut

154th of 168 places and towns of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Connecticut page.

Places of Connecticut near Marlborough town in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Killingworth town	6,240 ±19
Simsbury Center CDP	6,198 ±675
Northford CDP	6,186 ±552
Cheshire Village CDP	6,172 ±599
Beacon Falls town	6,147 ±27
Marlborough town	6,130 ±33
Hazardville CDP	6,022 ±701
Daniels Farm CDP	5,976 ±731
Portland CDP	5,944 ±488
Sherwood Manor CDP	5,706 ±868
Pawcatuck CDP	5,577 ±525

Rankings this appears in

No. 3 Places in Connecticut by homeownership rate
No. 3 Places in Connecticut by median household income
No. 19 Places in Connecticut by median age
No. 23 Places in Connecticut by median rent
No. 25 Places in Connecticut by per capita income
No. 47 Places by homeownership rate

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026