Dukes County GIS Maps

Dukes County Maps

The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.

County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.

Dukes County Parcels

Dukes County has 21,799 mapped parcels. The median assessed value is $1,192,200. The median lot size is 0.62 acres. 721 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1983 or earlier. The records carry 17,163 distinct owner names. About 31% of parcels list an owner mailing address outside Massachusetts. Owner names, mailing addresses, site addresses and assessed values are on nearly every parcel. Lot sizes reach 93.9%. Browse the interactive Dukes County Parcel viewer here.

Dukes County Parcel Data Coverage

Field coverage measured across all Dukes County parcel records. Download free sample data here.

Dukes County Population

Dukes County had 20,600 residents in 2020. That was 24.6% higher than in 2010. Dukes County added 5,613 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 200 people per square mile. Some of the county's most populated postal areas include Vineyard Haven, Edgartown and West Tisbury.

Population Trend in Dukes County MA

Dukes County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Dukes County Zip Codes

Dukes County has 7 zip codes. Some of the county's most populated zip codes include Vineyard Haven (02568), Edgartown (02539) and West Tisbury (02575). Vineyard Haven is the largest zip by population, with about 8,172 residents or 40% of the county total. Together, the three largest zips account for about 80% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Dukes County MA

Dukes County Zip Code populations and trends per most recent census data.

Dukes County Demographics

Dukes County has a median age of 50.4, which makes the county a little older than Massachusetts overall. About 17.3% of residents are under 18, while 26% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 26.1% of the population, which points to a solid working-age base. About 49% of adults have a bachelor's degree or higher, above the statewide figure of 46.6%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.

Key Demographics for Dukes County MA

Dukes County School Districts

Dukes County is served by 1 public school district with 4 students enrolled in 2020. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.

Largest School Districts by Enrollment in Dukes County MA

Dukes County school district enrollment and trends per most recent NCES reporting data.

Dukes County Housing & Real Estate

Dukes County has a median home value of $1,104,100 and a median gross rent of $1,371. About 75% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Massachusetts median, while rents come in below the state average. In March 2026, the median listing price was $2,395,000 and homes spent about 140 days on the market.

Businesses in Dukes County, MA

Dukes County has 1,868 business listings across 403 categories. The largest categories in Dukes County business listings are Beach (64, 3.4%), Clothing Stores (46, 2.5%), and Restaurants (42, 2.2%). The full Dukes County business listings dataset includes names, categories, addresses and contact details where available. Dukes County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Dukes County, MA

Dukes County Business Listings

Dukes County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Dukes County Basemaps

Dukes County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from Massachusetts — explore the full structure before you buy.