Boundary Atlas

ZIP code 02540: Falmouth, MA

ZIP code 02540 is in Falmouth (45% of residents), West Falmouth (21%) and Woods Hole (1.3%), in Barnstable County, Massachusetts. 33% of its residents live outside city limits. It is in Massachusetts's 9th congressional district. Its state senate district is Plymouth and Barnstable District; its state house districts are Barnstable-Dukes-Nantucket District (96%) and 3rd Barnstable District (3.5%).

8,450residents (2020 Census)
11.0 sq miland area
3cities and towns
1congressional district
4voting precincts

See it on the mapAll of Massachusetts

City and county

City or townShare of ZIP residents
Falmouth45%
West Falmouth21%
Woods Hole1.3%

CountyShare of ZIP residents
Barnstable County100%

Town or county subdivisionShare of ZIP residents
Falmouth town100%

Congressional district

Congressional districtShare of ZIP residents
Massachusetts's 9th congressional district (MA-09)100%

State legislative districts

State senate districtShare of ZIP residents
Plymouth and Barnstable District100%

State house districtShare of ZIP residents
Barnstable-Dukes-Nantucket District96%
3rd Barnstable District3.5%

Voting precincts

4 voting precincts overlap ZIP 02540. 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:02540")

ZIP 02540 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.