ZIP code 50603 is in Alta Vista (41% of residents), in Chickasaw County (89%) and Howard County (11%), Iowa. 59% of its residents live outside city limits. It is in Iowa's 2nd congressional district. Its state senate districts are State Senate District 29 (89%) and State Senate District 32 (11%); its state house districts are State House District 58 (89%) and State House District 63 (11%).
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).
2 voting precincts overlap ZIP 50603.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:50603")
ZIP 50603 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.