Boundary Atlas

ZIP code 02115: Boston, MA

ZIP code 02115 is in Boston, in Suffolk County, Massachusetts. It is in Massachusetts's 7th congressional district. Its state senate districts are Third Suffolk District (43%), Second Suffolk District (29%), Suffolk and Middlesex District (22%) and First Suffolk District (6.3%); its state house districts are 8th Suffolk District (55%), 7th Suffolk District (29%), 15th Suffolk District (9.7%) and 9th Suffolk District (6.3%).

31,604residents (2020 Census)
0.7 sq miland area
1cities and towns
1congressional district
14voting 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 district

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

State legislative districts

State senate districtShare of ZIP residents
Third Suffolk District43%
Second Suffolk District29%
Suffolk and Middlesex District22%
First Suffolk District6.3%

State house districtShare of ZIP residents
8th Suffolk District55%
7th Suffolk District29%
15th Suffolk District9.7%
9th Suffolk District6.3%

Voting precincts

14 voting precincts overlap ZIP 02115. 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:02115")

ZIP 02115 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.