ZIP code 57521 is in Corn Creek (23% of residents) and Belvidere (19%), in Jackson County (51%) and Mellette County (49%), South Dakota. 57% 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 27 (51%) and State Senate District 26 (49%); its state house districts are State House District 27 (51%) and State House District 26A (49%).
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 57521.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 57521 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.