- La Cañada Flintridge
- La Crescenta-Montrose
- La Habra
- La Habra Heights
- La Honda
- La Jolla
- La Mesa
- La Mirada
- La Palma
- La Porte
- La Presa
- La Puente
- La Quinta
- La Riviera
- La Selva Beach
- La Verne
- La Vina
- Ladera
- Ladera Heights
- Ladera Ranch
- Lafayette
- Laguna
- Laguna Beach
- Laguna Hills
- Laguna Niguel
- Laguna Woods
- Lagunitas-Forest Knolls
- Lake Almanor Country Club
- Lake Almanor Peninsula
- Lake Almanor West
- Lake Arrowhead
- Lake City
- Lake Davis
- Lake Elsinore
- Lake Forest
- Lake Hughes
- Lake Isabella
- Lake Los Angeles
- Lake Nacimiento
- Lake of the Pines
- Lake of the Woods
- Lake San Marcos
- Lake Wildwood
- Lakehead
- Lakeland Village
- Lakeport
- Lakeside
- Lakeview
- Lakewood
- Lamont
- Lanare
- Lancaster
- Larkfield-Wikiup
- Larkspur
- Las Flores
- Las Flores
- Las Flores
- Las Lomas
- Lathrop
- Laton
- Lawndale
- Laytonville
- Le Grand
- Lebec
- Lee Vining
- Leggett
- Lemon Cove
- Lemon Grove
- Lemoore
- Lemoore Station
- Lennox
- Lenwood
- Leona Valley
- Lewiston
- Lexington Hills
- Likely
- Lincoln
- Lincoln Village
- Linda
- Lindcove
- Linden
- Lindsay
- Linnell Camp
- Litchfield
- Little Grass Valley
- Little River
- Littlerock
- Live Oak
- Live Oak
- Livermore
- Livingston
- Lockeford
- Lockwood
- Lodi
- Lodoga
- Loleta
- Loma Linda
- Loma Mar
- Loma Rica
- Lomita
- Lompico
- Lompoc
- London
- Lone Pine
- Long Barn
- Long Beach
- Lookout
- Loomis
- Los Alamitos
- Los Alamos
- Los Altos
- Los Altos Hills
- Los Angeles
- Los Banos
- Los Berros
- Los Gatos
- Los Molinos
- Los Olivos
- Los Osos
- Los Serranos
- Lost Hills
- Lower Lake
- Loyalton
- Loyola
- Lucas Valley-Marinwood
- Lucerne
- Lucerne
- Lucerne Valley
- Lynwood
- Lytle Creek
