Boundary Atlas

ZIP code 02125: Boston, MA

ZIP code 02125 is in Boston, in Suffolk County, Massachusetts. It is in Massachusetts's 8th congressional district (54%) and Massachusetts's 7th congressional district (46%). Its state senate districts are First Suffolk District (84%) and Second Suffolk District (16%); its state house districts are 13th Suffolk District (45%), 5th Suffolk District (44%) and 9th Suffolk District (11%).

34,926residents (2020 Census)
2.2 sq miland area
1cities and towns
2congressional districts
20voting precincts

See it on the mapAll of Massachusetts

City and county

City or townShare of ZIP residents
Boston100%

CountyShare of ZIP residents
Suffolk County100%

Town or county subdivisionShare of ZIP residents
Boston city100%

Congressional districts

Congressional districtShare of ZIP residents
Massachusetts's 8th congressional district (MA-08)54%
Massachusetts's 7th congressional district (MA-07)46%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
MayorMichelle Wu617-635-4500100%
U.S. Representative (MA-08)Stephen F. Lynch (D)202-225-827354%
U.S. Representative (MA-07)Ayanna Pressley (D)202-225-511146%
U.S. SenatorEdward J. Markey (D)202-224-2742 · contact formstatewide
U.S. SenatorElizabeth Warren (D)202-224-4543 · contact formstatewide
State Senator (First Suffolk District)Nick Collins (Democratic)84%
State Senator (Second Suffolk District)Liz Miranda (Democratic)16%
State Representative (13th Suffolk District)Dan Hunt (Democratic)45%
State Representative (5th Suffolk District)Chris Worrell (Democratic)44%
State Representative (9th Suffolk District)John Moran (Democratic)11%

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); 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
First Suffolk District84%
Second Suffolk District16%

State house districtShare of ZIP residents
13th Suffolk District45%
5th Suffolk District44%
9th Suffolk District11%

Voting precincts

20 voting precincts overlap ZIP 02125. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:02125")

ZIP 02125 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.