Boundary Atlas

ZIP code 01473: Westminster, MA

ZIP code 01473 is in Worcester County, Massachusetts, outside any city or Census-designated place. It is in Massachusetts's 3rd congressional district (92%) and Massachusetts's 2nd congressional district (8.0%). Its state senate district is Worcester and Hampshire District; its state house district is 1st Worcester District.

8,213residents (2020 Census)
35.4 sq miland area
0cities and towns
2congressional districts
3voting precincts

See it on the mapAll of Massachusetts

City and county

Outside any city or Census-designated place.


CountyShare of ZIP residents
Worcester County100%

Town or county subdivisionShare of ZIP residents
Westminster town100%

Congressional districts

Congressional districtShare of ZIP residents
Massachusetts's 3rd congressional district (MA-03)92%
Massachusetts's 2nd congressional district (MA-02)8.0%

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
U.S. Representative (MA-03)Lori Trahan (D)202-225-341192%
U.S. Representative (MA-02)James P. McGovern (D)202-225-61018.0%
U.S. SenatorEdward J. Markey (D)202-224-2742 · contact formstatewide
U.S. SenatorElizabeth Warren (D)202-224-4543 · contact formstatewide
State Senator (Worcester and Hampshire District)Peter Durant (R)100%
State Representative (1st Worcester District)Kim Ferguson (R)100%

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 ZIP residents
Worcester and Hampshire District100%

State house districtShare of ZIP residents
1st Worcester District100%

Voting precincts

3 voting precincts overlap ZIP 01473. 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:

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ZIP 01473 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.