ZIP code 83404 is in Idaho Falls (93% of residents), in Bonneville County, Idaho. 7.5% of its residents live outside city limits. It is in Idaho's 2nd congressional district. Its state senate districts are State Senate District 33 (60%) and State Senate District 32 (40%); its state house districts are State House District 33 (60%) and State House District 32 (40%).
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).
14 voting precincts overlap ZIP 83404.
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:83404")
ZIP 83404 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.