ZIP code 21157 is in Westminster (27% of residents), in Carroll County, Maryland. 73% of its residents live outside city limits. It is in Maryland's 2nd congressional district. Its state senate districts are State Senate District 5 (70%) and State Senate District 42 (30%); its state house districts are State Legislative District 5 (70%) and State Legislative Subdistrict 42C (30%).
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).
22 voting precincts overlap ZIP 21157.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:21157")
ZIP 21157 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.