Boundary Atlas

ZIP code 95020: Gilroy, CA

ZIP code 95020 is in Gilroy (88% of residents) and San Martin (1.6%), in Santa Clara County, California. 11% of its residents live outside city limits. It is in California's 18th congressional district (98%) and California's 19th congressional district (2.0%). Its state senate district is State Senate District 15; its state house districts are Assembly District 29 (96%), Assembly District 25 (2.7%) and Assembly District 28 (1.7%).

68,090residents (2020 Census)
151.8 sq miland area
2cities and towns
2congressional districts
29voting precincts

See it on the mapAll of California

City and county

City or townShare of ZIP residents
Gilroy88%
San Martin1.6%

CountyShare of ZIP residents
Santa Clara County100%

Town or county subdivisionShare of ZIP residents
South Santa Clara Valley CCD95%
Llagas-Uvas CCD4.3%
Diablo Range CCD0.3%

Congressional districts

Congressional districtShare of ZIP residents
California's 18th congressional district (CA-18)98%
California's 19th congressional district (CA-19)2.0%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

State legislative districts

State senate districtShare of ZIP residents
State Senate District 15100%

State house districtShare of ZIP residents
Assembly District 2996%
Assembly District 252.7%
Assembly District 281.7%

Voting precincts

29 voting precincts overlap ZIP 95020. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:95020")

ZIP 95020 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.