ZIP code 57040 is in Lesterville (33% of residents), in Yankton County (97%) and Bon Homme County (2.6%), South Dakota. 67% of its residents live outside city limits. It is in South Dakota's at-large congressional district. Its state senate districts are State Senate District 18 (97%) and State Senate District 19 (2.6%); its state house districts are State House District 18 (97%) and State House District 19 (2.6%).
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 57040.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 57040 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.