Boundary Atlas

ZIP code 01879: Tyngsborough, MA

ZIP code 01879 is in Middlesex County, Massachusetts, outside any city or Census-designated place. It is in Massachusetts's 3rd congressional district. Its state senate district is First Middlesex District; its state house district is 36th Middlesex District.

12,368residents (2020 Census)
16.8 sq miland area
0cities and towns
1congressional district
5voting precincts

See it on the mapAll of Massachusetts

City and county

Outside any city or Census-designated place.


CountyShare of ZIP residents
Middlesex County100%

Town or county subdivisionShare of ZIP residents
Tyngsborough town100%
Dracut town0.2%

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 (First Middlesex District)Vanna Howard (Democratic)100%
State Representative (36th Middlesex District)Colleen Garry (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
First Middlesex District100%

State house districtShare of ZIP residents
36th Middlesex District100%

Voting precincts

5 voting precincts overlap ZIP 01879. 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:01879")

ZIP 01879 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.