ZIP code 91764: Ontario, CA
ZIP code 91764 is in Ontario, in San Bernardino County, California. It is in California's 35th congressional district. Its state senate district is State Senate District 22; its state house districts are Assembly District 53 (58%) and Assembly District 50 (42%).
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| Ontario | 100% |
| County | Share of ZIP residents |
|---|---|
| San Bernardino County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Ontario CCD | 100% |
| San Bernardino CCD | land only |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| California's 35th congressional district (CA-35) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CA-35) | Norma J. Torres (D) | 202-225-6161 | 100% |
| U.S. Senator | Adam B. Schiff (D) | 202-224-3841 | statewide |
| U.S. Senator | Alex Padilla (D) | 202-224-3553 · contact form | statewide |
| State Senator (State Senate District 22) | Susan Rubio (Democratic) | 909-460-6064 | 100% |
| Assembly Member (Assembly District 53) | Michelle Rodriguez (Democratic) | 909-902-9606 | 58% |
| Assembly Member (Assembly District 50) | Robert Garcia (Democratic) | 909-966-5090 | 42% |
Elected in 2024 under CA'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).
Local government
- Ontario website: https://ontarioca.gov
- Ontario laws: search for the Ontario, California code of ordinances
- San Bernardino County website: https://main.sbcounty.gov/
- San Bernardino County laws: search for the San Bernardino County, California code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 22 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 53 | 58% |
| Assembly District 50 | 42% |
Voting precincts
36 voting precincts overlap ZIP 91764. 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:91764")
ZIP 91764 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.