ZIP code 19966 is in Millsboro (21% of residents) and Long Neck (9.3%), in Sussex County, Delaware. 70% of its residents live outside city limits. It is in Delaware's at-large congressional district. Its state senate districts are State Senate District 19 (52%), State Senate District 20 (34%) and State Senate District 21 (14%); its state house districts are State Representative District 4 (54%), State Representative District 41 (33%), State Representative District 37 (7.2%) and State Representative District 40 (5.5%).
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).
20 voting precincts overlap ZIP 19966.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 19966 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.