ZIP code 78566 is in Los Fresnos (34% of residents), Laureles (17%), Brownsville (7.3%), Indian Lake (3.5%), Bayview (2.0%) and Chula Vista (1.1%), in Cameron County, Texas. 34% of its residents live outside city limits. It is in Texas's 34th congressional district. Its state senate district is State Senate District 27; its state house districts are State House District 37 (97%) and State House District 38 (3.2%).
Elected in 2024 under TX's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).
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).
8 voting precincts overlap ZIP 78566.
Map them, with each precinct's share of the ZIP's residents.
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ZIP 78566 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.