Boundary Atlas

ZIP code 01581: Westborough, MA

ZIP code 01581 is in Westborough (20% of residents), in Worcester County, Massachusetts. 80% of its residents live outside city limits. It is in Massachusetts's 2nd congressional district. Its state senate district is Second Worcester District; its state house districts are 19th Worcester District (84%) and 11th Worcester District (16%).

21,567residents (2020 Census)
20.6 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Massachusetts

City and county

City or townShare of ZIP residents
Westborough20%

CountyShare of ZIP residents
Worcester County100%

Town or county subdivisionShare of ZIP residents
Westborough town100%

Congressional district

Congressional districtShare of ZIP residents
Massachusetts's 2nd congressional district (MA-02)100%

Members of Congress

OfficeMemberContact
U.S. Representative (MA-02)James P. McGovern (D)202-225-6101
U.S. SenatorEdward J. Markey (D)202-224-2742 · contact form
U.S. SenatorElizabeth Warren (D)202-224-4543 · contact form

Members serving now (119th Congress, until January 3, 2027). Source: Members of Congress: the @unitedstates project, congress-legislators (CC0).

State legislative districts

State senate districtShare of ZIP residents
Second Worcester District100%

State house districtShare of ZIP residents
19th Worcester District84%
11th Worcester District16%

Voting precincts

6 voting precincts overlap ZIP 01581. Map them, with each precinct's share of the ZIP's residents.

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related_geographies(id="us:zcta:01581")

ZIP 01581 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.