Boundary Atlas

Green Harbor, Massachusetts

Green Harbor is a Census-designated place (an unincorporated community) in Plymouth County, Massachusetts, with 394 residents in 2020. It is in Massachusetts's 9th congressional district. It spans 2 state house districts. Its state senate district is First Plymouth and Norfolk District.

394residents (2020 Census)
0.3 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Plymouth 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 (First Plymouth and Norfolk District)Patrick O'Connor (R)100%
State Representative (6th Plymouth District)Ken Sweezey (R)52%
State Representative (4th Plymouth District)Patrick Kearney (Democratic)48%

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
First Plymouth and Norfolk District100%

State house districtShare of residents
6th Plymouth District52%
4th Plymouth District48%

ZIP codes

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

Get this in your AI agent

Your agent can get Green Harbor'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:2527130")

Green Harbor here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.