Boundary Atlas

Somerville, Massachusetts

Somerville is a city in Middlesex County, Massachusetts, with 81,045 residents in 2020. It is in Massachusetts's 7th congressional district. It spans 3 state house districts. Its state senate district is Second Middlesex District.

81,045residents (2020 Census)
4.1 sq miland area
6ZIP codes
1congressional district

County

CountyShare of residents
Middlesex County100%

Congressional district

Congressional districtShare of residents
Massachusetts's 7th congressional district (MA-07)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MA-07)Ayanna Pressley (D)202-225-5111100%
U.S. SenatorEdward J. Markey (D)202-224-2742 · contact formstatewide
U.S. SenatorElizabeth Warren (D)202-224-4543 · contact formstatewide
State Senator (Second Middlesex District)Pat Jehlen (Democratic)100%
State Representative (27th Middlesex District)Erika Uyterhoeven (Democratic)57%
State Representative (34th Middlesex District)Christine Barber (Democratic)29%
State Representative (26th Middlesex District)Mike Connolly (Democratic)14%

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
Second Middlesex District100%

State house districtShare of residents
27th Middlesex District57%
34th Middlesex District29%
26th Middlesex District14%

ZIP codes

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

Get this in your AI agent

Your agent can get Somerville'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:2562535")

Somerville 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.