The Mid-Southern California Area has been allotted the responsibility of General Service support throughout the Area by the General Service Conference. In turn, the M.S.C.A. District structure has been approved by the Area Assembly to facilitate the accomplishment of this responsibility. The illustration below approximates the size and location of the Districts in the M.S.C.A. structure.
The Area is entirely covered by the Spanish-speaking Districts and also by the English-speaking Districts. Each District has assumed the responsibility for General Service support within the geographic boundaries of their District. Included are incorporated and unincorporated cities, towns and geographic locations. (All of these communities may not be shown in the lists of communities provided by the Districts for this atlas.) Spanish-speaking Districts support the Spanish-speaking Groups and English-speaking Districts support the English-speaking Groups. Groups with other languages are supported by the English-speaking District in which they are located.
Aliso Viejo, Capistrano Beach, Dana Point , Laguna Beach, Laguna Hills, Laguna Woods, Laguna Niguel, Lake Forest, Mission Viejo, Mojeska Canyon, Rancho Santa Margarita, San Clemente, San Juan Capistrano, Silverado Canyon, South Laguna, Coto de Caza and Ladera Ranch.
Aliso Viejo, Balboa, Capistrano Beach, Corona del Mar, Costa Mesa, Dana Point, Fountain Valley, Huntington Beach, Irvine, Laguna Beach, Laguna Hills, Laguna Niguel, Laguna Woods, Lake Forest, Leisure World, Mission Viejo, Modjeska Canyon, Newport Beach, Rancho Santa Margarita, Santa Ana, San Clemente, San Juan Capistrano, Seal Beach, Silverado Canyon, South Laguna, Sunset Beach, Trabuco Canyon, Tustin
Artesia, Avalon, Bellflower, Carson, Cerritos, Dominquez, Gardena, Harbor City, Hawaiian Gardens, Hermosa Beach, Lakewood, Lawndale, Lomita, Long Beach, Los Alamitos, Manhattan Beach, Rancho Palos Verdes, Redondo Beach, Rolling Hills, Rolling Hills Estates, San Pedro, Signal Hill, Torrance, Wilmington, and portions of Compton, Norwalk, Paramount.
Bermuda Dunes, Cathedral City, Coachella, Desert Center, Desert Hot Springs, Eagle Mountain, Indian Wells, Indio, Joshua Tree, Landers, La Quinta, Mecca, Morongo Valley, Palm Desert, Palm Springs, Rancho Mirage, Thermal, Thousand Palms, Twentynine Palms, Yucca Valley
Anza, Bloomington, Bluejay, Cabazon, Canyon Lake, Corona, Grand Terrace, Hemet, Homeland, Idyllwild, Lake Elsinore, Loma Linda, Menifee, Mira Loma, Moreno Valley, Murrieta, Newberry Springs, Norco, Ontario, Perris, Rancho California, Riverside, Romoland, Rubidoux, San Jacinto, Sun City, Temecula, Wildomar.
Adelanto, Apple Valley, Banning, Barstow, Beaumont, Big Bear City, Big Bear Lake, Cherry Valley, Crestline, Colton, Dagget, Devore, El Cerrito, Fawnskin, Fontana, Forest Falls, Helendale, Hesperia, Highland, Hinkley, Lake Arrowhead, Lenwood, Lucerne Valley, Mentone, Muscoy, Phelan, Redlands, Rialto, Running Springs, San Bernardino, Trona, Victorville, Yermo, Yucaipa.