Boundary Atlas

ZIP code 02639: Dennis Port, MA

ZIP code 02639 is in Dennis Port (98% of residents) and West Dennis (1.6%), in Barnstable County, Massachusetts. It is in Massachusetts's 9th congressional district. Its state senate district is Cape and Islands District; its state house districts are 1st Barnstable District (100%) and 4th Barnstable District (0.2%).

3,238residents (2020 Census)
2.8 sq miland area
3cities and towns
1congressional district
4voting precincts

See it on the mapAll of Massachusetts

City and county

City or townShare of ZIP residents
Dennis Port98%
West Dennis1.6%
Northwest Harwich0.2%

CountyShare of ZIP residents
Barnstable County100%

Town or county subdivisionShare of ZIP residents
Dennis town100%
Harwich town0.2%

Congressional district

Congressional districtShare of ZIP residents
Massachusetts's 9th congressional district (MA-09)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MA-09)William R. Keating (D)202-225-3111100%
U.S. SenatorEdward J. Markey (D)202-224-2742 · contact formstatewide
U.S. SenatorElizabeth Warren (D)202-224-4543 · contact formstatewide
State Senator (Cape and Islands District)Julian Cyr (Democratic)100%
State Representative (1st Barnstable District)Chris Flanagan (Democratic)100%
State Representative (4th Barnstable District)Hadley Luddy (Democratic)0.2%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
Cape and Islands District100%

State house districtShare of ZIP residents
1st Barnstable District100%
4th Barnstable District0.2%

Voting precincts

4 voting precincts overlap ZIP 02639. Map them, with each precinct's share of the ZIP's residents.

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ZIP 02639 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.