ZIP code 02128: Boston, MA

ZIP code 02128 is in Boston, in Suffolk County, Massachusetts. It is in Massachusetts's 7th congressional district. Its state senate district is Third Suffolk District; its state house district is 1st Suffolk District.

43,066residents (2020 Census)

5.0 sq miland area

1cities and towns

1congressional district

15voting precincts

See it on the map All of Massachusetts

City and county

City or town	Share of ZIP residents
Boston	100%

County	Share of ZIP residents
Suffolk County	100%

Town or county subdivision	Share of ZIP residents
Boston city	100%
Winthrop Town city	land only

Congressional district

Congressional district	Share of ZIP residents
Massachusetts's 7th congressional district (MA-07)	100%
Massachusetts's 5th congressional district (MA-05)	land only

State legislative districts

State senate district	Share of ZIP residents
Third Suffolk District	100%

State house district	Share of ZIP residents
1st Suffolk District	100%
19th Suffolk District	land only

Voting precincts

15 voting precincts overlap ZIP 02128. 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:02128")

ZIP 02128 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.