Under the 2020 redistricting, California's 23rd congressional district is located in the region of the state covering the
Mojave Desert. It encompasses the majority of
San Bernardino, and parts of
Kern and
Los Angeles Counties. The area in San Bernardino County includes parts of the cities of
Redlands,
Highland, and
San Bernardino; the cities of
Victorville,
Barstow,
Twentynine Palms,
Adelanto,
Yucaipa,
Loma Linda,
Apple Valley,
Hesperia,
Colton, and
Big Bear Lake; the town of
Yucca Valley; and the census-designated places
Searles Valley,
Fort Irwin,
Baker,
Yermo,
Silver Lakes,
Piñon Hills,
Phelan,
Oak Hills,
Mountain View Acres,
Spring Valley Lake,
Mentone,
Oak Glen,
Crestline,
Lake Arrowhead,
Running Springs,
Lucerne Valley,
Big Bear City,
Morongo Valley,
Joshua Tree,
Homestead Valley. The area in Kern County includes part of the census-designated place of
Mojave; the city of
California City; and the census-designated places
North Edwards,
Boron,
Randsburg, and
Johannesburg. The area in Los Angeles County includes the census-designated place
Lake Los Angeles. San Bernardino County is split between this district, the
25th district, the
28th district, the
33rd district, and the
40th district. The 23rd, 28th and 33rd are partitioned by San Bernardino National Forest, Manzanita Rd, Highway 15, Cajon Blvd, W Kenwood Ave, Highway 215, W Meyers Rd, Ohio Ave, Pine Ave, Bailey act, Highway 206, Devils Canyon Rd, Cloudland Truck Trail, Cloudland Cutoff, Hill Dr, W 54th St, E Hill Dr, Bonita Vista Dr, Sterling Ave, Argyle Ave, E Marshall Blvd, Rockford Ave, Lynwood Dr, La Praix St, Orchid Dr, Denair Ave, Highland Ave, Orchard Rd, Arroyo Vista Dr, Church St, Greensport Rd, Florida St, Garnet St, Nice Ave, Crafton Ave, 5th Ave, Walnut St, 6th Ave, S Wabash Ave, E Citrus Ave, N Church St, Southern California Regional Rail A, Tennessee St, Highway 10, California St, E Washington St, and S Barton Rd. The 23rd and 25th are partitioned by Power Line Rd, Telephone Pole Line Rd, Cadiz Rd, Arizona & California Rail, San Bernardino National Forest, East Mojave Heritage Trail, Sunflower Springs Spur, Sunflower Springs Rd, Needles Freeway, Mountain Springs Rd, Goffs Rd, and Walter Rd. Kern County is split between this district and the
20th district. They are partitioned by the Mojave-Barstow Highway, Treescape Rd, Oak Creek Rd, Anajanette Ave, 70th St W, Highway 58, Homer Hansen Private Rd, Aerospace Highway, Redrock Randsburgs Rd, Garlock Rd, Iron Canyon, and Union Pacific. Los Angeles County is split between this district, the
27th district, and the
28th district. They are partitioned by Angeles National Forest, Linda Mesa Rd, San Gabriel Mountains, Fort Tejon Rd, 121st St E, 123rd St E, 126th St E, Highway N6, Highway 138, 136th St E, Longview Rd, E Avenue S, 140th St E, E Avenue H, 120th St E.
Cities and CDPs with 10,000 or more people •
San Bernardino – 222,101 •
Victorville – 134,810 •
Hesperia – 99,818 •
Apple Valley – 75,791 •
Redlands – 73,168 •
Highland – 56,999 •
Yucaipa – 54,542 •
Colton – 53,909 •
Adelanto – 38,046 •
Twentynine Palms – 28,065 •
Barstow – 25,415 •
Loma Linda – 24,791 •
Yucca Valley – 21,738 •
California City – 14,973 •
Phelan – 13,859 •
Lake Los Angeles – 13,187 •
Big Bear City – 12,738 •
Lake Arrowhead – 12,401 •
Crestline – 11,650
2,500 – 10,000 people •
Spring Valley Lake – 9,598 •
Mentone – 9,557 •
Oak Hills – 9,450 •
Fort Irwin – 8,845 •
Piñon Hills – 7,258 •
Joshua Tree – 6,589 •
Silver Lakes – 6,317 •
Lucerne Valley – 5,331 •
Running Springs – 5,268 •
Big Bear Lake – 5,046 •
Mojave – 4,699 •
Lenwood – 3,623 •
Morongo Valley – 3,514 •
Mountain View Acres – 3,337 •
Homestead Valley – 2,789 == List of members representing the district ==