California's 23rd congressional district (CA-23)
California's 23rd congressional district (CA-23) covers parts or all of San Bernardino County, Kern County, Riverside County and Los Angeles County, and 92 ZIP codes (59 wholly inside it). Its 2020 population was 769,312. This is the map in force for the November 3, 2026 election.
Who represents CA-23
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (CA-23) | Jay Obernolte (R) | 202-225-5861 |
| 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-23 |
|---|---|
| San Bernardino County | 31% |
| Kern County | 2.1% |
| Riverside County | 2.0% |
| Los Angeles County | 0.2% |
ZIP codes
Percentages mark ZIPs only partly in CA-23: the share of that ZIP's residents inside it.
- 89019 (0.8%)
- 92220 (1.2%)
- 92223 (11%)
- 92225
- 92239 (88%)
- 92242
- 92252 (100%)
- 92256
- 92267
- 92268
- 92277 (7.7%)
- 92280
- 92284
- 92285
- 92301
- 92304
- 92305
- 92307
- 92308
- 92309
- 92310
- 92311
- 92314
- 92315
- 92317
- 92320
- 92321
- 92322
- 92324 (0.8%)
- 92325
- 92327
- 92332
- 92333
- 92338
- 92339
- 92341
- 92342
- 92344
- 92345
- 92346 (9.0%)
- 92347
- 92350
- 92352
- 92354
- 92356
- 92359 (100%)
- 92363
- 92364
- 92365
- 92368
- 92369
- 92371 (97%)
- 92372
- 92373 (36%)
- 92374 (7.6%)
- 92378
- 92382
- 92385
- 92386
- 92391
- 92392
- 92394
- 92395
- 92397 (9.7%)
- 92398
- 92399
- 92404 (3.6%)
- 92407 (3.7%)
- 92408 (2.9%)
- 92545 (0.9%)
- 92548 (7.4%)
- 92555 (0.3%)
- 92567 (65%)
- 92571 (1.8%)
- 92582 (0.2%)
- 92583 (1.3%)
- 93501 (3.1%)
- 93505
- 93516 (100%)
- 93519 (95%)
- 93523 (32%)
- 93528
- 93535 (9.0%)
- 93543 (0.7%)
- 93544
- 93553 (63%)
- 93554
- 93555 (3.2%)
- 93558
- 93562
- 93563 (13%)
- 93591 (91%)
Towns
Barstow CCD, Blythe CCD, Needles CCD, Newberry Springs-Baker CCD, Searles Valley CCD, Victorville-Hesperia CCD, Yucaipa CCD, Lake Arrowhead CCD, Big Bear CCD, Chuckwalla Valley CCD, Twentynine Palms-Yucca Valley CCD, East Kern CCD, San Gorgonio Pass CCD, North Antelope Valley CCD, San Bernardino CCD, Perris Valley CCD, South Antelope Valley CCD, Hemet-San Jacinto CCD and Riverside CCD.
Get this in your AI agent
Your agent can draw every precinct in CA-23, 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:0623", children_level="precinct", include_districts=True)