May we count your visit with Google Analytics? It uses cookies and sends visit data to Google. You can change this any time under Cookie choices. Privacy

Where am ILOCATED

Dukes County, Massachusetts

Dukes County, Massachusetts, has 21,219 residents (July 2025 estimate). Its county seat is Edgartown. It uses Eastern Time and covers 103 sq mi (267 km²) of land.

BostonWorcesterSpringfield
Dukes County in Massachusetts
Vineyard HavenEdgartown
Dukes County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
21,219
Land area
103 sq mi (267 km²)
County seat or government
Edgartown
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$125,786 ± $14,169
Median home value
$1,165,800 ± $68,458
Median rent, with utilities
$1,277 ± $413
Homes lived in by their owners
82.1% ± 4.6 points
County type
County
Metro or micro area
Vineyard Haven, MA micro areaCentral county
Water area
388 sq mi (1,004 km²)
State
Massachusetts
County code (FIPS)
25007
Coordinates (central point)
41.380970, -70.701499
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Dukes County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 025689,412 people
  2. 025395,278 people
  3. 025752,718 people
  4. 025352,244 people
  5. 025571,250 people
  6. 02543747 people
  7. 0271323 people

7 ZIP Code areas overlap Dukes County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Dukes County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Towns in Dukes County, largest first

  1. Town of Oak Bluffs5,407 people
  2. Town of Edgartown5,278 people
  3. Town of Tisbury4,893 people
  4. Town of West Tisbury3,080 people
  5. Town of Chilmark1,578 people
  6. Town of Aquinnah666 people
  7. Town of Gosnold31 people

People counts are American Community Survey 2020–2024 5-year estimates. All towns in Massachusetts, by county

School districts in Dukes County, largest first

  1. Martha's Vineyard School District20,902 people
  2. Oak Bluffs School District5,407 people
  3. Up-Island Regional School District5,324 people
  4. Edgartown School District5,278 people
  5. Tisbury School District4,893 people
  6. Gosnold School District31 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Tribal areas in Dukes County, largest first

  1. Wampanoag-Aquinnah Trust Land128 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Vineyard Haven, Massachusetts (CDP)2,469 people
  2. Oak Bluffs, Massachusetts (CDP)1,184 people
  3. Edgartown, Massachusetts (CDP)904 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Nantucket County, Massachusetts32 mi east
  2. Bristol County, Massachusetts32 mi northwest
  3. Barnstable County, Massachusetts36 mi northeast

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.