Boundary Atlas

ZIP code 01561: South Lancaster, MA

ZIP code 01561 is in South Lancaster, in Worcester County, Massachusetts. It is in Massachusetts's 3rd congressional district. Its state senate district is Worcester and Middlesex District; its state house district is 12th Worcester District.

64residents (2020 Census)
0.0 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
South Lancaster100%

CountyShare of ZIP residents
Worcester County100%

Town or county subdivisionShare of ZIP residents
Lancaster town100%

Congressional district

Congressional districtShare of ZIP residents
Massachusetts's 3rd congressional district (MA-03)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MA-03)Lori Trahan (D)202-225-3411100%
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 Middlesex District)John Cronin (Democratic)100%
State Representative (12th Worcester District)Meg Kilcoyne (Democratic)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 Middlesex District100%

State house districtShare of ZIP residents
12th Worcester District100%

Voting precincts

1 voting precinct overlap ZIP 01561. Map them, with each precinct's share of the ZIP's residents.

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ZIP 01561 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.