ZIP code 51503 is in Council Bluffs (75% of residents), in Pottawattamie County (99%) and Mills County (0.6%), Iowa. 25% of its residents live outside city limits. It is in Iowa's 4th congressional district. Its state senate districts are State Senate District 10 (67%) and State Senate District 8 (33%); its state house districts are State House District 19 (42%), State House District 15 (30%), State House District 20 (25%) and State House District 16 (2.6%).
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).
21 voting precincts overlap ZIP 51503.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 51503 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.