ZIP code 83401 is in Idaho Falls (38% of residents), Lincoln (9.7%), Ammon (5.4%) and Ucon (1.9%), in Bonneville County (100%) and Jefferson County (0.2%), Idaho. 45% of its residents live outside city limits. It is in Idaho's 2nd congressional district. Its state senate districts are State Senate District 32 (40%), State Senate District 33 (30%), State Senate District 35 (30%) and State Senate District 31 (0.2%); its state house districts are State House District 32 (40%), State House District 33 (30%), State House District 35 (30%) and State House District 31 (0.2%).
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).
23 voting precincts overlap ZIP 83401.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 83401 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.