Boundary Atlas

ZIP code 01434: Devens, MA

ZIP code 01434 is in Devens (99% of residents), in Worcester County (84%) and Middlesex County (16%), Massachusetts. It is in Massachusetts's 3rd congressional district. Its state senate districts are Middlesex and Worcester District (100%) and Worcester and Middlesex District (0.2%); its state house district is 37th Middlesex District.

1,652residents (2020 Census)
6.5 sq miland area
2cities and towns
1congressional district
3voting precincts

See it on the mapAll of Massachusetts

City and county

City or townShare of ZIP residents
Devens99%
Ayer0.7%

CountyShare of ZIP residents
Worcester County84%
Middlesex County16%

Town or county subdivisionShare of ZIP residents
Harvard town84%
Ayer town16%
Shirley town0.2%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
Middlesex and Worcester District100%
Worcester and Middlesex District0.2%

State house districtShare of ZIP residents
37th Middlesex District100%

Voting precincts

3 voting precincts overlap ZIP 01434. 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:01434")

ZIP 01434 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.