ZIP code 11803 is in Plainview (89% of residents), Bethpage (7.2%) and Old Bethpage (3.2%), in Nassau County, New York. It is in New York's 3rd congressional district. Its state senate districts are State Senate District 5 (80%) and State Senate District 7 (20%); its state house districts are Assembly District 15 (60%), Assembly District 13 (30%) and Assembly District 10 (9.1%).
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).
30 voting precincts overlap ZIP 11803.
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:11803")
ZIP 11803 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.