Nantucket County, Massachusetts

Nantucket County population, land area and income

Nantucket County had 14,670 residents in the Census Vintage 2024 estimate, on 46.2 square miles of land. It ranks 14th of 14 in Massachusetts by population and 14th by land area. That works out to 317.6 people per square mile, 3.3 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Massachusetts has 503,121 residents, so Nantucket County has 3% of the typical county's population.

Its SAIPE 2023 median household income of $108,671 is in the top tenth among 3,143 counties with an estimate.

How Nantucket County's population changed since 2020

Nantucket County gained 431 residents between the July 2020 and July 2024 estimates, a rise of 3.0%. That ranks 2nd of 14 in Massachusetts for growth. The median Massachusetts county changed by +2.2%, and the state as a whole by +2.0%.

Since the April 2020 estimates base, Nantucket County recorded 655 births and 365 deaths, a natural change of +290. Net international migration added +336 and net domestic migration, people moving to or from other US counties, came to -208. The largest single component was international migration, which added 336 people.

Where Nantucket County is

The Census internal point of Nantucket County is at 41.293400, -70.102200. It sits in UTM zone 19N. The map shades Massachusetts's 14 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Nantucket County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Nantucket County

No incorporated place of 1,000 or more people has residents in Nantucket County. Its 14,670 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Nantucket County

The Census 2024 county adjacency file lists 1 neighbor for Nantucket County. The most populous is Dukes County, MA, with 21,061 residents. Distances run between Census internal points in a straight line.

• Dukes County

  21,061 people

  32 mi W

Distance to Boston and the nearest big city

Boston is 88.7 miles NNW of Nantucket County's internal point in a straight line. The nearest place of 100,000 or more is New Bedford, MA (population 101,318), 50.2 miles away. The nearest place of 10,000 or more is Barnstable Town, MA (population 49,831), 28.6 miles away.

Nantucket County FIPS code

The FIPS code of Nantucket County is 25019: state code 25 for Massachusetts plus county code 019. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $108,671.