Demographics of Barnstable County, Massachusetts

Barnstable County, Massachusetts had 233,539 people on July 1, 2025, by the Census Bureau’s estimate: +5,484 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Barnstable County, in four figures

233,539
Population: July 1, 2025, Vintage 2025 estimate.; +2.4%
Change since July 2020: +5,484 people.; 55.4 ±0.1
Median age: ACS 2020–⁠2024.; $95,241 ±$2,510
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Barnstable County, Massachusetts's population grew 2.4% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Barnstable County, 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).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Barnstable County, Massachusetts's population grew 2.4% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Barnstable County, 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	228,055	100.0	100.0
2021	232,449	101.9	100.2
2022	232,970	102.2	100.7
2023	233,592	102.4	101.6
2024	233,951	102.6	102.5
2025	233,539	102.4	103.1

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Population of Barnstable County, Massachusetts on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	228,055	−1,009	−528	+4	−384
2021	232,449	+4,394	−1,765	+275	+6,242
2022	232,970	+521	−1,756	+1,561	+834
2023	233,592	+622	−1,764	+1,795	+642
2024	233,951	+359	−1,654	+1,827	+235
2025	233,539	−412	−1,579	+628	+547

Age, 2020–2024

The median age is 55.4 ±0.1: for men 52.9 ±0.3 and for women 56.7 ±0.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Barnstable County by age, ACS 2020–2024
Age	People	Share	Massachusetts	United States
Under 5	7,855 ±340	3.4% ±0.1	5.0% ±<0.1	5.6% ±<0.1
5 to 17	24,849 ±965	10.7% ±0.4	14.4% ±0.1	16.3% ±<0.1
18 to 24	15,232 ±875	6.6% ±0.4	9.8% ±0.1	9.1% ±<0.1
25 to 44	42,440 ±983	18.3% ±0.4	27.1% ±0.1	26.9% ±<0.1
45 to 64	64,537 ±1,471	27.9% ±0.6	25.9% ±0.1	24.8% ±<0.1
65 and over	76,755 ±1,785	33.1% ±0.8	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $95,241 ±$2,510, and income per person $62,086 ±$1,573, 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 Barnstable County by income, ACS 2020–2024
Household income	Households	Share	Massachusetts	United States
Under $25,000	12,238 ±826	11.6% ±0.8	13.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	14,733 ±1,004	13.9% ±0.9	12.5% ±0.2	16.7% ±<0.1
$50,000 to $74,999	14,847 ±969	14.0% ±0.9	12.0% ±0.2	15.5% ±<0.1
$75,000 to $99,999	13,270 ±988	12.5% ±0.9	10.7% ±0.2	12.6% ±<0.1
$100,000 to $149,999	18,520 ±966	17.5% ±0.9	17.5% ±0.2	17.5% ±<0.1
$150,000 to $199,999	12,876 ±1,127	12.2% ±1.1	11.9% ±0.1	9.6% ±<0.1
$200,000 or more	19,293 ±1,201	18.2% ±1.1	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 Barnstable County by age, ACS 2020–2024
Age	Below poverty	Rate	Massachusetts	United States
All ages	17,567 ±1,500	7.7% ±0.7	10.0% ±0.1	12.5% ±0.1
Under 18	2,905 ±556	9.1% ±1.7	11.7% ±0.3	16.1% ±0.1
18 to 59	7,564 ±794	7.6% ±0.8	9.3% ±0.2	11.6% ±0.1
60 and over	7,098 ±768	7.3% ±0.8	10.4% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Barnstable County, ACS 2020–2024
Measure	Barnstable County	Massachusetts	United States
Housing units	166,215 ±74	3,030,406 ±453	143,775,355 ±10,234
Occupied	63.6% ±0.8	91.9% ±0.2	89.9% ±0.1
Vacant	36.4% ±0.8	8.1% ±0.2	10.1% ±0.1
Owner occupied	81.1% ±0.6	62.5% ±0.3	65.2% ±0.3
Renter occupied	18.9% ±1.1	37.5% ±0.2	34.8% ±0.1
Median home value	$629,000 ±$7,027	$562,100 ±$2,169	$332,700 ±$236
Median gross rent	$1,678 ±$60	$1,762 ±$9	$1,413 ±$2
Median year built	1977 ±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 Barnstable County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Massachusetts	United States
Hispanic or Latino	8,561 ±0	3.7% ±<0.1	13.3% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	197,297 ±1,675	85.2% ±0.7	66.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	6,441 ±740	2.8% ±0.3	6.4% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	3,402 ±431	1.5% ±0.2	7.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	770 ±217	0.3% ±0.1	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 32	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	3,083 ±939	1.3% ±0.4	1.2% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	12,114 ±1,500	5.2% ±0.6	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 Barnstable County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Massachusetts	United States
Born in the state	138,160 ±2,295	59.6% ±1.0	58.7% ±0.2	57.3% ±<0.1
Born in another state	67,198 ±2,131	29.0% ±0.9	20.3% ±0.2	26.9% ±<0.1
Born a citizen outside the states	3,379 ±541	1.5% ±0.2	2.9% ±0.1	1.7% ±<0.1
Born abroad	22,931 ±1,735	9.9% ±0.7	18.0% ±0.1	14.1% ±<0.1
Naturalized citizens	12,472 ±1,114	5.4% ±0.5	9.7% ±0.1	7.4% ±<0.1
Not citizens	10,459 ±1,296	4.5% ±0.6	8.3% ±0.1	6.8% ±<0.1

Barnstable County among the counties of Massachusetts

9th of 14 by population, July 2025. Every one is listed on the Massachusetts page.

Counties of Massachusetts near Barnstable County in population, July 2025
County	July 2025	Change since 2020
Suffolk County	791,891	+0.1%
Norfolk County	739,749	+2.2%
Bristol County	593,640	+2.9%
Plymouth County	546,829	+3.5%
Hampden County	464,338	+0.1%
Barnstable County	233,539	+2.4%
Hampshire County	164,065	+10.4%
Berkshire County	128,224	−1.2%
Franklin County	70,698	−0.3%
Dukes County	21,219	+3.1%
Nantucket County	14,758	+3.6%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — 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

Data retrieved September 25, 2026