ZIP code 40204 is in Louisville, in Jefferson County, Kentucky. It is in Kentucky's 3rd congressional district. Its state senate districts are State Senate District 35 (42%), State Senate District 19 (35%), State Senate District 26 (23%) and State Senate District 33 (0.2%); its state house districts are State House District 41 (55%), State House District 43 (37%) and State House District 42 (8.0%).
Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
33 voting precincts overlap ZIP 40204.
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:40204")
ZIP 40204 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.