ZIP code 57233 is in Erwin (31% of residents), in Kingsbury County, South Dakota. 69% 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 8; its state house district is State House District 8.
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).
1 voting precinct overlap ZIP 57233.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 57233 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.