As of the 2020 redistricting, California's 30th congressional district is located in Southern California. Two sections of the district are within Los Angeles County, and the other two sections cover parts of northern Los Angeles.
Los Angeles County is split between this district, the 27th district, the 28th district, the 29th district, the 32nd district, the 34th district, the 36th district, and the 37th district. The 30th and 27th are partitioned by Angeles National Forest, B P and L Rd, Mt Emma Rd, BPL Rd, Angeles Forest Highway, NF-3N17, Moody Canyon, NF-4N53, Soledad Canyon Rd, Indian Canyon Rd, and Santa Clarita Divide Rd.
The 30th and 28th are partitioned by Angeles National Forest, Big Tujunga Creek, Big Tujunga Canyon Rd, Silver Creek, Markridge Rd, Pennsylvania Ave, Northwoods Ln, Ramsdell Ave, Fairway Ave, La Crescenta Ave, Mayfield Ave, Rosemont Ave, Florencita Ave, Thompson Ct, Park Pl, Verdugo Blvd, La Tour Way, Descanso Gardens, Norham Pl, Wendover Rd, Linda Vista Ave, Oak Grove Dr, Yucca Ln, W Montana St, Vermont St, Forest Ave, Wyoming St, Lincoln Ave, Anderson Pl, Canada Pl, Highway 210, W Hammond St, Glen Ave, W Mountain St, Manzanita Ave, N Orange Grove Blvd, and Ventura Freeway.
The 30th and 29th are partitioned by Angeles National Forest, NF-4N35, Gold Creek Rd, Big Tujunga Canyon Rd, Little Tujunga Rd, Longford St, Clybourne Ave, Foothill Freeway, Kagel Canyon St, Osborne St, Terra Bella St, Glenoaks Blvd, Montague St, San Fernando Rd, Branford St, Tujunga Wash, Wentworth St, Sheldon St, Tuxford St, Sunland Blvd, Golden State Freeway, Cohasset St, Sherman Way, Vineland Ave, Southern Pacific Railroad, Ledge Ave, W Clark Ave, N Clybourn Ave, and the Los Angeles River.
The 30th and 32nd are partitioned by Lankershim Blvd, Fredonia Dr, Cahuenga Blvd W, Broadlawn Dr, Multiview Dr, Mulholland Dr, Laurel Canyon Blvd, W Sunset Blvd, Ozeta Ter, and Doheny Rd.
The 30th and 34th are partitioned by Crenshaw Blvd, Wilshire Blvd, S Van Ness Ave, S Wilton Pl, N Wilton Pl, Beverly Blvd, N Western Ave, Melrose Ave, Hollywood Freeway, Douglas St, Lilac Ter, N Boylston St, Academy Rd, Pasadena Freeway, Highway 5, Duvall St, Blake Ave, Fernleaf St, Crystal St, Blake Ave, Meadowvale Ave, Los Angeles, Benedict St, N Coolidge Ave, Glendale Freeway, Roswell St, Delay Dr, Fletcher Dr, Southern Pacific Railroad, S Glendale Ave, Vista Superba Dr, Verdugo Rd, Plumas St, Carr Park, Harvey Dr, and Eagle Rock Hilside Park.
The 30th, 36th, and 37th are partitioned by Phyllis Ave, N Doheny Dr, N Oakhurst Dr, Burton Way, N Robertson Blvd, 8733 Clifton Way-201 S Le Doux Rd, N San Vicente Blvd, La Cienga Park, W Olympic Blvd, San Vicente Blvd, S Cochran Ave, Edgewood Pl, S Cloverdale Ave, S La Brea Ave, and S Sycamore Ave.