Dukes County, Massachusetts

Dukes County population, land area and income

Dukes County had 21,061 residents in the Census Vintage 2024 estimate, on 103.2 square miles of land. It ranks 13th of 14 in Massachusetts by population and 12th by land area. That works out to 204.1 people per square mile, 2.1 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Massachusetts has 503,121 residents, so Dukes County has 4% of the typical county's population.

Its SAIPE 2023 median household income of $94,059 is in the top tenth among 3,143 counties with an estimate.

How Dukes County's population changed since 2020

Dukes County gained 481 residents between the July 2020 and July 2024 estimates, a rise of 2.3%. That ranks 7th 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, Dukes County recorded 720 births and 722 deaths, a natural change of -2. Net international migration added +689 and net domestic migration, people moving to or from other US counties, came to -210. The largest single component was international migration, which added 689 people.

Where Dukes County is

The Census internal point of Dukes County is at 41.381000, -70.701500. 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 Dukes County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Dukes County

No incorporated place of 1,000 or more people has residents in Dukes County. Its 21,061 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Dukes County

The Census 2024 county adjacency file lists 3 neighbors for Dukes County. The most populous is Bristol County, MA, with 588,593 residents. Distances run between Census internal points in a straight line.

• Bristol County

  588,593 people

  32 mi NW

• Barnstable County

  232,570 people

  36 mi NE

• Nantucket County

  14,670 people

  32 mi E

Distance to Boston and the nearest big city

Boston is 70.0 miles NNW of Dukes County's internal point in a straight line. The nearest place of 100,000 or more is New Bedford, MA (population 101,318), 22.9 miles away.

Dukes County FIPS code

The FIPS code of Dukes County is 25007: state code 25 for Massachusetts plus county code 007. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $94,059.