Los Angeles County is split between this district, the 34th district, the 37th district, the 38th district, the 45th district, the 44th district, the 47th district, and the 43rd district. The 42nd, 34th and 38th are partitioned by S Gerhart Ave, Simmons Ave, Dewar Ave, W Beverly Blvd, Repetto Ave, Allston St, S Concourse Ave, Ferguson Dr, Simmons Ave/S Gerhart Ave, Highway 72, Goodrich Blvd, Telegraph Rd, S Marianna Ave, Noakes St, S Bonnie Beach Pl, Union Pacific Ave, S Indiana St, Union Pacific Railroad, Holabird Ave, S Grande Vista Ave, AT & SF Railway, Harriet St, and E 25th St.
The 42nd, 37th, and 43rd are partitioned by S Alameda St, E Slauson Ave, S Central Ave, Firestone Blvd-E 90 St, S Central Ave, E 103rd St, Success Ave, E 92nd St, E 91st, Croesus Ave, and E 97th St.
The 42nd, 38th, 45th, and 47th are partitioned by Yates Ave, E Acco St, 6866 E Washington Blvd-2808 Vail Ave, S 14th St, AT & SF Railway, Church Rd, Telegraph Rd, Rio Hondo River, Veterans Memorial Park, Suva St, Guatemala Ave, Shady Oak Dr, Coolgrove Dr, Gallatin Rd, Samoline Ave, Paramount Blvd, Arrington Ave, Suva St, Charloma Dr, Lubet St, Highway 5, San Gabriel River, Palo Verde Ave, South St, Del Amo Blvd, Pioneer Blvd, Coyote Creek, Centralia Creek, Hawaiian Ave, Verne Ave, Bloomfield Park, Highway 605, 226th St, Dorado Cir, Cortner Ave, E Woodson St, Bloomfield Ave, Lilly Ave, Marna Ave, Los Alamos Channel, and the San Gabriel Bike Path.
The 42nd and 44th are partitioned by S Alameda St, Southern Pacific Railroad, Ardmore Ave, Long Beach Blvd, Pacific Blvd, Cudahy St, 2622 Cudahy St-3211 Santa Ana St, Santa Ana St, Salt Lake Ave, Patata St, 7038 Dinwiddie St-10112 Karmont Ave, Imperial Highway, Old River School Rd, Union Pacific Railroad, Gardendale St, Century Blvd, Highway 19. Laurel St, Clark Ave, Beach St, Bellflower Blvd, E Carson St, Woodruff Ave, Gonda Ave, E Wardlow Rd, N Los Coyotes Diagonal, McNab Ave, E Spring St, E Harvey Way, Faculty Ave, E Carson St, Norse Way, Lakewood Golf Course, Cover St, E 36th St, Cherry Ave, Atlantic Ave, E Willow St, Long Beach Blvd, Highway 1, Oregon Ave, W Anaheim St, Los Angeles River, Canal Ave, W 19th St, Santa Fe Ave, Seabright Ave, W 25th St, W Willow St, Middle Rd-East Rd, 2300 E Pacific Coast Highway-W Anaheim St, E Anaheim St-Cerritos Channel, Piers S Ave, Highway 47, and Navy Mole Rd.