ZIP code 21102 is in Manchester (45% of residents), in Carroll County (91%) and Baltimore County (8.8%), Maryland. 55% of its residents live outside city limits. It is in Maryland's 2nd congressional district. Its state senate districts are State Senate District 5 (66%) and State Senate District 42 (34%); its state house districts are State Legislative District 5 (66%), State Legislative Subdistrict 42C (25%) and State Legislative Subdistrict 42A (8.8%).
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).
5 voting precincts overlap ZIP 21102.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:21102")
ZIP 21102 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.