Boundary Atlas

ZIP code 02564: Siasconset, MA

ZIP code 02564 is in Siasconset (72% of residents), in Nantucket County, Massachusetts. 28% of its residents live outside city limits. It is in Massachusetts's 9th congressional district. Its state senate district is Cape and Islands District; its state house district is Barnstable-Dukes-Nantucket District.

703residents (2020 Census)
6.1 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
Siasconset72%

CountyShare of ZIP residents
Nantucket County100%

Town or county subdivisionShare of ZIP residents
Nantucket 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
Cape and Islands District100%

State house districtShare of ZIP residents
Barnstable-Dukes-Nantucket District100%

Voting precincts

1 voting precinct overlap ZIP 02564. Map them, with each precinct's share of the ZIP's residents.

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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:02564")

ZIP 02564 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.