Boundary Atlas

ZIP code 02457: Wellesley, MA

ZIP code 02457 is in Wellesley, in Norfolk County, Massachusetts. It is in Massachusetts's 4th congressional district. Its state senate district is Norfolk and Middlesex District; its state house district is 14th Norfolk District.

1,560residents (2020 Census)
0.2 sq miland area
1cities and towns
1congressional district
1voting precincts

See it on the mapAll of Massachusetts

City and county

City or townShare of ZIP residents
Wellesley100%

CountyShare of ZIP residents
Norfolk County100%

Town or county subdivisionShare of ZIP residents
Wellesley town100%

Congressional district

Congressional districtShare of ZIP residents
Massachusetts's 4th congressional district (MA-04)100%

State legislative districts

State senate districtShare of ZIP residents
Norfolk and Middlesex District100%

State house districtShare of ZIP residents
14th Norfolk District100%

Voting precincts

1 voting precinct overlap ZIP 02457. Map them, with each precinct's share of the ZIP's residents.

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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:02457")

ZIP 02457 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.