Boundary Atlas

Barnstable Town, Massachusetts

Barnstable Town is a city in Barnstable County, Massachusetts, with 48,916 residents in 2020. It is in Massachusetts's 9th congressional district. It spans 2 state house districts. Its state senate district is Cape and Islands District.

48,916residents (2020 Census)
59.9 sq miland area
13ZIP codes
1congressional district

County

CountyShare of residents
Barnstable County100%

Congressional district

Congressional districtShare of 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 (2nd Barnstable District)Kip Diggs (Democratic)78%
State Representative (5th Barnstable District)Steve Xiarhos (R)22%

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 residents
Cape and Islands District100%

State house districtShare of residents
2nd Barnstable District78%
5th Barnstable District22%

ZIP codes

Percentages mark ZIPs only partly in Barnstable Town: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Barnstable Town's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:2503690")

Barnstable Town here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.