Demographics of Dennis town, Massachusetts

Dennis town, Massachusetts had 14,906 people on July 1, 2025, by the Census Bureau’s estimate: +226 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Dennis town, in four figures

14,906
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 14,868 ±24.; +1.5%
Change since July 2020: +226 people.; 59.5 ±2.0
Median age: ACS 2020–⁠2024.; $88,154 ±$9,976
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.

Dennis town, Massachusetts's population grew 1.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Dennis town, Massachusetts'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

Dennis town, Massachusetts's population grew 1.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Dennis town, Massachusetts'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	14,680	100.0	100.0
2021	14,913	101.6	100.2
2022	14,982	102.1	100.7
2023	15,018	102.3	101.6
2024	14,942	101.8	102.5
2025	14,906	101.5	103.1

Population of Dennis town, Massachusetts on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	14,680	—
2021	14,913	+233
2022	14,982	+69
2023	15,018	+36
2024	14,942	−76
2025	14,906	−36

Age, 2020–2024

The median age is 59.5 ±2.0: for men 58.6 ±1.2 and for women 61.3 ±2.9. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Dennis town by age, ACS 2020–2024
Age	People	Share	Massachusetts	United States
Under 5	355 ±168	2.4% ±1.1	5.0% ±<0.1	5.6% ±<0.1
5 to 17	986 ±251	6.6% ±1.7	14.4% ±0.1	16.3% ±<0.1
18 to 24	972 ±296	6.5% ±2.0	9.8% ±0.1	9.1% ±<0.1
25 to 44	2,296 ±393	15.4% ±2.6	27.1% ±0.1	26.9% ±<0.1
45 to 64	4,342 ±463	29.2% ±3.1	25.9% ±0.1	24.8% ±<0.1
65 and over	5,917 ±502	39.8% ±3.4	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $88,154 ±$9,976, and income per person $57,683 ±$5,007, in 2024 dollars. The median is $103,960 ±$527 in Massachusetts and $80,734 ±$166 in the United States.

Households by income

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Households in Dennis town by income, ACS 2020–2024
Household income	Households	Share	Massachusetts	United States
Under $25,000	828 ±191	11.3% ±2.5	13.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	1,125 ±262	15.4% ±3.5	12.5% ±0.2	16.7% ±<0.1
$50,000 to $74,999	1,270 ±221	17.4% ±2.9	12.0% ±0.2	15.5% ±<0.1
$75,000 to $99,999	977 ±199	13.4% ±2.6	10.7% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,202 ±209	16.5% ±2.7	17.5% ±0.2	17.5% ±<0.1
$150,000 to $199,999	875 ±196	12.0% ±2.6	11.9% ±0.1	9.6% ±<0.1
$200,000 or more	1,025 ±220	14.0% ±2.9	22.3% ±0.2	13.4% ±0.1

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).

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Poverty rate in Dennis town by age, ACS 2020–2024
Age	Below poverty	Rate	Massachusetts	United States
All ages	990 ±350	6.7% ±2.4	10.0% ±0.1	12.5% ±0.1
Under 18	21 to 137	1.7% to 10.0%	11.7% ±0.3	16.1% ±0.1
18 to 59	203 to 613	3.3% to 9.8%	9.3% ±0.2	11.6% ±0.1
60 and over	503 ±195	7.0% ±2.6	10.4% ±0.2	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

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Housing in Dennis town, ACS 2020–2024
Measure	Dennis town	Massachusetts	United States
Housing units	15,381 ±544	3,030,406 ±453	143,775,355 ±10,234
Occupied	47.5% ±2.0	91.9% ±0.2	89.9% ±0.1
Vacant	52.5% ±2.3	8.1% ±0.2	10.1% ±0.1
Owner occupied	78.9% ±2.7	62.5% ±0.3	65.2% ±0.3
Renter occupied	21.1% ±3.7	37.5% ±0.2	34.8% ±0.1
Median home value	$627,100 ±$28,306	$562,100 ±$2,169	$332,700 ±$236
Median gross rent	$1,420 ±$260	$1,762 ±$9	$1,413 ±$2
Median year built	1970 ±1	1964 ±1	1980 ±1

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

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People in Dennis town by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Massachusetts	United States
Hispanic or Latino	1,144 ±559	7.7% ±3.8	13.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	12,792 ±678	86.0% ±4.6	66.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	101 to 565	0.7% to 3.8%	6.4% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	11 to 99	0.1% to 0.7%	7.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 21	0% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 21	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 417	0% to 2.8%	1.2% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	150 to 526	1.0% to 3.5%	5.1% ±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).

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People in Dennis town by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Massachusetts	United States
Born in the state	9,764 ±462	65.7% ±3.1	58.7% ±0.2	57.3% ±<0.1
Born in another state	3,669 ±442	24.7% ±3.0	20.3% ±0.2	26.9% ±<0.1
Born a citizen outside the states	129 to 499	0.9% to 3.4%	2.9% ±0.1	1.7% ±<0.1
Born abroad	1,121 ±360	7.5% ±2.4	18.0% ±0.1	14.1% ±<0.1
Naturalized citizens	583 ±235	3.9% ±1.6	9.7% ±0.1	7.4% ±<0.1
Not citizens	538 ±206	3.6% ±1.4	8.3% ±0.1	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%.

Dennis town among the places and towns of Massachusetts

142nd of 291 places and towns of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Massachusetts page.

Places of Massachusetts near Dennis town in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Belchertown town	15,393 ±34
Mashpee town	15,384 ±29
Whitman town	15,295 ±47
Swampscott CDP	15,277 ±21
Holliston town	15,094 ±24
Dennis town	14,868 ±24
Hanover town	14,845 ±36
Bedford town	14,727 ±35
Wilbraham town	14,572 ±24
Nantucket town	14,483
Uxbridge town	14,473 ±41

Rankings this appears in

No. 61 Places by median age

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