ZIP code 02645 is in East Harwich (50% of residents), Northwest Harwich (27%), Harwich Center (18%) and Harwich Port (4.0%), in Barnstable County, Massachusetts. It is in Massachusetts's 9th congressional district. Its state senate district is Cape and Islands District; its state house districts are 4th Barnstable District (99%) and 1st Barnstable District (1.2%).
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).
6 voting precincts overlap ZIP 02645.
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:02645")
ZIP 02645 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.