ZIP code 42003 is in Paducah (31% of residents), Hendron (17%), Reidland (16%) and Farley (15%), in McCracken County (100%) and Graves County (<0.1%), Kentucky. 21% of its residents live outside city limits. It is in Kentucky's 1st congressional district. Its state senate districts are State Senate District 2 (100%) and State Senate District 1 (<0.1%); its state house districts are State House District 3 (60%), State House District 2 (16%), State House District 1 (14%) and State House District 6 (10%).
22 voting precincts overlap ZIP 42003.
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:42003")
ZIP 42003 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.