ZIP code 91710: Chino, CA
ZIP code 91710 is in Chino (94% of residents), in San Bernardino County, California. 6.3% of its residents live outside city limits. It is in California's 31st congressional district (96%) and California's 35th congressional district (3.6%). Its state senate district is State Senate District 22; its state house districts are Assembly District 53 (94%) and Assembly District 59 (6.5%).
See it on the mapAll of California
City and county
| City or town | Share of ZIP residents |
|---|---|
| Chino | 94% |
| County | Share of ZIP residents |
|---|---|
| San Bernardino County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Ontario CCD | 100% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| California's 31st congressional district (CA-31) | 96% |
| California's 35th congressional district (CA-35) | 3.6% |
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.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Eunice M. Ulloa | 909-334-3250 | 94% |
| U.S. Representative (CA-31) | Gilbert Ray Cisneros, Jr. (D) | 202-225-5256 | 96% |
| U.S. Representative (CA-35) | Norma J. Torres (D) | 202-225-6161 | 3.6% |
| 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 | 94% |
| Assembly Member (Assembly District 59) | Phillip Chen (R) | 714-529-5502 | 6.5% |
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: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Chino website: http://www.cityofchino.org
- Chino laws: search for the Chino, 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 | 94% |
| Assembly District 59 | 6.5% |
Voting precincts
56 voting precincts overlap ZIP 91710. 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:91710")
ZIP 91710 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.