ZIP code 51108 is in Sioux City (71% of residents), in Woodbury County (78%) and Plymouth County (22%), Iowa. 29% of its residents live outside city limits. It is in Iowa's 4th congressional district. Its state senate districts are State Senate District 1 (78%) and State Senate District 7 (22%); its state house districts are State House District 2 (78%) and State House District 13 (22%).
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).
8 voting precincts overlap ZIP 51108.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:51108")
ZIP 51108 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.