ZIP code 57001 is in Alcester (55% of residents), in Union County (95%) and Lincoln County (4.7%), South Dakota. 45% of its residents live outside city limits. It is in South Dakota's at-large congressional district. Its state senate district is State Senate District 16; its state house district is State House District 16.
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 57001.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:57001")
ZIP 57001 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.