ZIP code 63021 is in Ballwin (27% of residents), Manchester (24%), Ellisville (8.3%), Wildwood (2.5%), Winchester (2.5%) and Twin Oaks (1.0%), in St. Louis County, Missouri. 35% of its residents live outside city limits. It is in Missouri's 2nd congressional district. Its state senate districts are State Senate District 15 (99%) and State Senate District 24 (1.2%); its state house districts are State House District 98 (41%), State House District 100 (38%), State House District 88 (12%), State House District 89 (5.0%), State House District 110 (2.5%) and State House District 90 (0.9%).
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).
52 voting precincts overlap ZIP 63021.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 63021 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.