County · Massachusetts
Nantucket County, Massachusetts
Nantucket County, Massachusetts. Nantucket County had 14,758 residents in 2025 by the Census Bureau's estimate, up 3.6% since 2020, faster than Massachusetts (+1.7%). It holds 4 places (1 town or township and 3 census-designated) and 7 census tracts. GEOID 25019.
Nantucket County is the county of the Nantucket, MA micropolitan statistical area (the Census Bureau's July 2023 delineation).
Nantucket County is the same area as Nantucket: the county and the city are one area with the same figures. This page lists its census tracts and the places within it; the city's page has its city ranks and its building permits.
Residents, July 2025 estimate
14,758
Census Bureau estimate (no margin published)
2020 Census count: 14,255 · ACS 2020-2024: 14,483
Median household income
$139,688
±$16,786 (90% margin)
Massachusetts: $103,960
Median home value
$1,593,800
±$149,009 (90% margin)
Massachusetts: $562,100
Median gross rent
$2,213
±$628 (90% margin)
Massachusetts: $1,762
How many people live in Nantucket County, and is it growing?
The 2020 Census counted 14,255 residents in Nantucket County. The Census Bureau estimates 14,758 for July 1, 2025, up 3.6% since 2020, faster than Massachusetts (+1.7%). The 2020-2024 American Community Survey puts the population at 14,483 over 46 square miles of land.
| Measure | Nantucket County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Total population | 14,483 | 7,044,056 | +3,315 |
| Households | 5,252±364 | 2,785,042 | +1,539 |
| Average household size | 2.71±0.19 | 2.44 | no clear change |
| Housing units | 12,594±20 | 3,030,406 | +249 |
Nantucket County's population since 2000
From 9,520 in 2000 to 14,758 in 2025: up 55.0%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Nantucket County?
Nantucket County holds 4 places: 1 town or township (a county subdivision with its own government) and 3 census-designated places. The largest is Nantucket with 14,758 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Nantucket | 14,255 | $139,688 |
|---|---|---|
| Nantucket CDP | 10,166 | $148,017 |
| SiasconsetGEOID 2561940 | 505 | not published |
| MadaketGEOID 2537735 | 377 | $112,500 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Nantucket County?
The median resident of Nantucket County is 42.4 years old; 20.5% are under 18 and 16.1% are 65 or older. The largest group is non-Hispanic white residents at 68.2%, then Hispanic or Latino residents (of any race) at 17.0%. 15.8% of residents were born outside the United States.
| Measure | Nantucket County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.4±1.6 | 40.0 | +2.1 |
| Under 18 years | 20.5%±1.8 pts | 19.4% | – |
| 65 years and over | 16.1%±0.8 pts | 17.9% | – |
| Hispanic or Latino (any race) | 17.0% | 13.3% | – |
| White alone, not Hispanic | 68.2%±0.9 pts | 66.6% | −17.0 pts |
| Black or African American alone, not Hispanic | 9.4%±1.7 pts | 6.4% | no clear change |
| Asian alone, not Hispanic | 1.7%±0.3 pts | 7.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.7%±1.8 pts | 5.1% | – |
| Some other race alone, not Hispanic | 0.9%±0.7 pts | 1.2% | – |
| Born outside the United States | 15.8%±4.4 pts | 18.0% | no clear change |
| Speak a language other than English at home (age 5+) | 18.7%±4.1 pts | 25.1% | – |
| Civilian veterans (age 18+) | 6.1%±2.1 pts | 4.3% | – |
| With a disability | 9.7%±3.1 pts | 12.3% | – |
| No health insurance coverage | 7.8%±5.2 pts | 2.6% | – |
| High school graduate or higher (age 25+) | 93.2%±4.8 pts | 91.4% | – |
| Bachelor's degree or higher (age 25+) | 56.3%±5.6 pts | 47.3% | no clear change |
| Graduate or professional degree (age 25+) | 21.9%±3.9 pts | 21.8% | – |
| Moved from another state in the past year | 2.9%±1.1 pts | 2.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Nantucket County earn?
Half of Nantucket County's 5,252 households earn less than $139,688 a year (±$16,786), against $103,960 in Massachusetts. In 2015-2019 it was $132,567 in 2024 dollars; the margins of error cannot tell the two periods apart. 3.2% of residents live below the poverty line.
| Measure | Nantucket County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $139,688±$16,786 | $103,960 | no clear change |
| Mean household income | $205,560±$23,517 | $144,950 | – |
| Per capita income | $77,014±$8,100 | $57,897 | no clear change |
| People below the poverty line | 3.2%±1.6 pts | 10.0% | −5.5 pts |
| Children under 18 below the poverty line | 0.8%±1.6 pts | 11.7% | – |
| Households receiving SNAP | 10.0%±6.1 pts | 14.7% | – |
| Households with a broadband subscription | 95.3%±2.4 pts | 92.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Nantucket County?
Owners occupy 71.8% of Nantucket County's occupied homes and renters 28.2%. The median owner-occupied home is valued at $1,593,800 by its owner (±$149,009). The median renter pays $2,213 a month including utilities, and 41.3% of renters pay 35% or more of their income on rent.
| Measure | Nantucket County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $1,593,800±$149,009 | $562,100 | +$258,866 |
| Median gross rent | $2,213±$628 | $1,762 | no clear change |
| Renters paying 35% or more of income on rent | 41.3%±16.1 pts | 41.8% | no clear change |
| Median monthly owner costs, with a mortgage | $3,888±$580 | $2,726 | – |
| Owner-occupied homes | 71.8%±6.2 pts | 62.5% | no clear change |
| Housing units | 12,594±20 | 3,030,406 | +249 |
| Homeowner vacancy rate | 0.5%±0.6 pts | 0.6% | – |
| Rental vacancy rate | 5.1%±5.4 pts | 3.5% | – |
| Single-family detached homes | 78.6%±3.2 pts | 51.1% | – |
| Mobile homes | 0.3%±0.3 pts | 0.8% | – |
| Built 2020 or later | 2.9%±2.4 pts | 1.0% | – |
| Built 1939 or earlier | 21.1%±3.1 pts | 30.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Nantucket County building?
Builders took permits for 250 new housing units across Nantucket County in 2025 (203 single-family), 16.9 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Nantucket County get to work?
67.9% of Nantucket County's workers drive alone and 13.0% work from home. The average trip to work takes 16.0 minutes.
| Measure | Nantucket County | Massachusetts | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 71.8%±3.3 pts | 67.0% | – |
| Unemployment rate | 4.3%±3.1 pts | 5.2% | – |
| Drove alone to work | 67.9%±5.7 pts | 61.2% | – |
| Carpooled | 6.0%±2.5 pts | 7.0% | – |
| Public transportation | 0.7%±0.9 pts | 6.5% | – |
| Walked | 6.4%±2.7 pts | 4.1% | – |
| Worked from home | 13.0%±3.7 pts | 18.6% | +6.0 pts |
| Mean travel time to work | 16.0 min±2.3 | 29.1 min | +4.0 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Nantucket County's census tracts?
Nantucket County is divided into 7 census tracts. Among those with a reliable estimate, median household income runs from $66,957 (Tract 9503.07) to $159,659 (Tract 9502.01).
| Tract 950125019950100 | 1,662±279 | $146,429 |
|---|---|---|
| Tract 9502.0125019950201 | 4,096±773 | $159,659 |
| Tract 9502.0225019950202 | 3,089±587 | $182,344 |
| Tract 9503.0725019950307 | 1,194±638 | $66,957 |
| Tract 950425019950400 | 3,319±737 | $137,121 |
| Tract 950525019950500 | 1,123±216 | $103,990 |
| Tract 990025019990000 | 0±14 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Nantucket County compare with Massachusetts's other counties?
| Measure | Rank |
|---|---|
| Population | 14th of 14 |
| Growth 2020-2025 | 1st of 14 |
| Residents per square mile | 10th of 14 |
| Median household income | 1st of 14 |
| Median home value | 1st of 14 |
| Median gross rent | 1st of 14 |
| Poverty rate | 14th of 14 |
| Bachelor's degree or higher | 3rd of 14 |
| Median age | 6th of 14 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Nantucket County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.