ZIP code 00959 is in Bayamón (98% of residents) and Guaynabo (1.4%), in Bayamón Municipio (98%), Guaynabo Municipio (1.4%), Toa Baja Municipio (0.5%) and Toa Alta Municipio (0.4%), Puerto Rico. It is in Puerto Rico's at-large congressional district. Its state senate district is State Senate District 2; its state house districts are State House District 7 (42%), State House District 8 (34%), State House District 6 (23%), State House District 10 (0.5%) and State House District 9 (0.4%).
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 00959.
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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:00959")
ZIP 00959 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.