California's 40th congressional district (CA-40)
California's 40th congressional district (CA-40) covers parts or all of Riverside County and Orange County, and 38 ZIP codes (10 wholly inside it). Its 2020 population was 758,355. This is the map in force for the November 3, 2026 election.
Who represents CA-40
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (CA-40) | Young Kim (R) | 202-225-4111 |
| U.S. Senator | Adam B. Schiff (D) | 202-224-3841 |
| U.S. Senator | Alex Padilla (D) | 202-224-3553 · contact form |
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: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in CA-40 |
|---|---|
| Riverside County | 21% |
| Orange County | 7.8% |
ZIP codes
Percentages mark ZIPs only partly in CA-40: the share of that ZIP's residents inside it.
- 92503 (19%)
- 92504 (16%)
- 92506 (2.8%)
- 92508 (13%)
- 92530
- 92532
- 92562
- 92563 (71%)
- 92570 (11%)
- 92584 (99%)
- 92585 (87%)
- 92586
- 92587 (100%)
- 92590 (41%)
- 92595
- 92596 (0.5%)
- 92602 (<0.1%)
- 92630 (<0.1%)
- 92676 (98%)
- 92678
- 92679 (79%)
- 92688
- 92691 (74%)
- 92692 (94%)
- 92694 (12%)
- 92705 (<0.1%)
- 92782 (<0.1%)
- 92807 (43%)
- 92808 (81%)
- 92861
- 92865 (46%)
- 92867 (56%)
- 92869 (56%)
- 92879 (16%)
- 92880 (3.5%)
- 92881
- 92882 (58%)
- 92883
Towns
Silverado CCD, Elsinore Valley CCD, Mission Viejo CCD, Lake Mathews CCD, Corona CCD, Murrieta CCD, Perris Valley CCD, Anaheim-Santa Ana-Garden Grove CCD and Riverside CCD.
Get this in your AI agent
Your agent can draw every precinct in CA-40, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:0640", children_level="precinct", include_districts=True)