Dukes County, Massachusetts

What we have for Dukes County today, and what is coming.

Basics

County code (FIPS): 25007
Land area: 103 square miles
Population: 20,600

Federal money spent here

Fiscal year 2026: $164.8 million in federal contracts, grants, loans and other awards for work done in Dukes County.

Explore on USAspending.gov

Who represents Dukes County

U.S. Senate (whole state): Edward J. Markey (Democrat), Elizabeth Warren (Democrat).

U.S. House districts that include part of this county

District	Member	Share of county land
Congressional District 9	William R. Keating (Democrat)	100%

State senate districts

District	Member	Share of county land
Cape and Islands District	not matched	100%

State house / assembly districts

District	Member	Share of county land
Barnstable-Dukes-Nantucket District	not matched	100%

Matched by district number using the U.S. Census Bureau 2020 county–district relationship files (land area overlap; districts may have been redrawn since). Your exact district depends on your address: U.S. House · state legislators.

County government

Find the official county website and contacts in the USA.gov local government directory or the National Association of Counties explorer.

Coming next for counties: county commission meetings and agendas, county budgets, local ballot measures and election results. We add each one as soon as a public, reliable feed exists for it. Know a good source? Tell us.

Sources: U.S. Census Bureau Gazetteer (county list, public domain); USAspending.gov (U.S. Treasury). Built 2026-11-03 15:28.