ZIP code 00966 is in Guaynabo (89% of residents), San Juan (10%) and Bayamón (1.0%), in Guaynabo Municipio (89%), San Juan Municipio (10%) and Bayamón Municipio (1.0%), Puerto Rico. It is in Puerto Rico's at-large congressional district. Its state senate districts are State Senate District 2 (90%) and State Senate District 1 (10%); its state house districts are State House District 6 (89%), State House District 4 (10%) and State House District 7 (1.0%).
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).
10 voting precincts overlap ZIP 00966.
Map them, with each precinct's share of the ZIP's residents.
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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:00966")
ZIP 00966 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.