Nantucket County, Massachusetts Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 14th-largest in Massachusetts
The population of Nantucket County, Massachusetts is 14,299 as of the 2023 American Community Survey, making it the 14th-largest county in Massachusetts. The median household income is $119,750, the median home value is $1,387,000, and the median age is 40.8.
The population of Nantucket County has grown 44.3% since 2010 (10,165 → 14,670), a +2.66% annualized rate.
14,299
Population
+2.66%
Annual growth
310
People / sq mi
$119,750
Median Income
$1,387,000
Median Home Value
Nantucket County covers 46 sq mi of land at 309.6 people per square mile.
About Nantucket County, MA
Housing cost is the defining feature of Nantucket County: the median home is valued at $1,387,000. With 14,299 residents, Nantucket County is a county in Massachusetts. It ranks #14 among counties in Massachusetts by population.
Households here are among the highest-earning of all US counties: median income is $119,750, above the US median of $78,538. Hardship is rare relative to US counties: a poverty rate of just 1.7%, below the national 12.4%. Real estate commands a premium here — a median home value of $1,387,000, with typical rent around $2,070.
The population is unusually well-credentialed for US counties — 58.4% of adults have a four-year degree, above the national 35.0%. About 11.8% of workers primarily work from home, below the national 14.0%, and the average commute runs about 15 minutes each way.
High housing values reframe the income picture in Nantucket County — even solid earnings stretch less against home prices and rents at this level.
Nantucket County Population History (2010-2024)
The county of Nantucket County had a population of 10,165 in 2010 and 14,670 in 2024, a 44.3% growth over 14 years. The peak was 14,670 in 2024. Average annual growth rate: 2.83%.
14,670
Population (2024)
10,165
Population (2010)
14,670
Peak (2024)
2.83%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,165 |
| 2011 | 10,133 |
| 2012 | 10,313 |
| 2013 | 10,564 |
| 2014 | 10,833 |
| 2015 | 10,933 |
| 2016 | 11,081 |
| 2017 | 11,156 |
| 2018 | 11,118 |
| 2019 | 11,330 |
| 2020 | 14,239 |
| 2021 | 14,507 |
| 2022 | 14,464 |
| 2023 | 14,534 |
| 2024 | 14,670 |
Race & Ethnicity
| White | 70.8% |
| Black or African American | 9.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.0% |
| Two or More Races | 0.0% |
Age & Sex
40.8
Median Age
49.2%
Female
50.8%
Male
15.5%
Age 65+
Age Distribution
Children (under 15): 16.4% · Seniors (65+): 15.5%
Income & Poverty
| Median household income | $119,750+$18,409 vs state |
| Mean household income | $194,491 |
| Per-capita income | $72,733 |
| Poverty rate | 1.7%-4.9% vs state |
| Unemployment rate | 3.9% |
| Employment-to-population | 69.0% |
Top Industries by Employment
The largest employment sector in Nantucket County is professional & business services, accounting for 24.6% of workers.
How residents commute
0.8%
Drive alone
5.9%
Carpool
69.9%
Public transit
11.8%
Work from home
15.2 min
Avg commute
Housing
$1,387,000+$861,200 vs state
Median home value
$2,070
Median rent
76.5%
Homeownership rate
12,449
Total housing units
40.5%
Occupied
59.5%
Vacant
23.5%
Renter-occupied
Social & access
93.5%
With health insurance
98.8%
With broadband internet
37.0%
Foreign-born
4.5%
Veterans (18+)
9.3%
With a disability
84.4%
Speak language other than English at home
Education
96.0%
High School+
58.4%
Bachelor's+
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County rankings
Frequently Asked Questions
Nantucket County, Massachusetts has a population of 14,299 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 14th-largest county in Massachusetts. Population density is 310 people per square mile.
The population of Nantucket County has grown 44.3% since 2010 (10,165 → 14,670), a +2.66% annualized rate.
The median household income in Nantucket County, Massachusetts is $119,750, with mean (average) household income of $194,491 and per-capita income of $72,733. 1.7% of residents live below the federal poverty level.
In Nantucket County, the largest racial and ethnic groups are White (70.8%), Black or African American (9.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Nantucket County, Massachusetts is 40.8 years. Residents are 49.2% female and 50.8% male.
The median home value in Nantucket County is $1,387,000 and median monthly rent is $2,070. 76.5% of occupied housing units are owner-occupied. The county has 12,449 total housing units, 59.5% of which are vacant.
The largest employment sector in Nantucket County, Massachusetts is professional, scientific, and management services, employing 24.6% of workers. The unemployment rate is 3.9%.
Boston is among the largest cities associated with Nantucket County, Massachusetts, with a population of 663,972.
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Population, race, income, age, and trends across Massachusetts
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.