ZIP code 20866 is in Burtonsville (58% of residents) and Fairland (42%), in Montgomery County, Maryland. It is in Maryland's 4th congressional district. Its state senate district is State Senate District 14; its state house district is State Legislative District 14.
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 20866.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:20866")
ZIP 20866 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.