<Ul> <Li> The Coastal Region, which is densely populated and includes the coastal interior valleys west of the coastal mountains with all of Orange County and portions of San Diego, Los Angeles, Ventura, Santa Barbara, and San Luis Obispo counties <Ul> <Li> A related florist province term is the Cismontane Region on the coastal side of the Transverse and Peninsular mountain ranges, with the term "southern California" popularly referring to this more populated and visited zone </Li> </Ul> </Li> <Li> The Desert Region, which is larger and sparsely populated with portions of Kern, Los Angeles, San Bernardino, Riverside, Imperial, and San Diego counties . The division between the Coastal Region and the Inland Empire / Imperial Valley winds along the backs of coastal mountain ranges such as the Santa Ana Mountains . <Ul> <Li> A related floristic province term is the Transmontane Region on the rain shadow side of the same mountain ranges, with the term southern California including this zone geographically and when distinguishing all the' southland' from northern California </Li> </Ul> </Li> </Ul> <Li> The Coastal Region, which is densely populated and includes the coastal interior valleys west of the coastal mountains with all of Orange County and portions of San Diego, Los Angeles, Ventura, Santa Barbara, and San Luis Obispo counties <Ul> <Li> A related florist province term is the Cismontane Region on the coastal side of the Transverse and Peninsular mountain ranges, with the term "southern California" popularly referring to this more populated and visited zone </Li> </Ul> </Li> <Ul> <Li> A related florist province term is the Cismontane Region on the coastal side of the Transverse and Peninsular mountain ranges, with the term "southern California" popularly referring to this more populated and visited zone </Li> </Ul> <Li> A related florist province term is the Cismontane Region on the coastal side of the Transverse and Peninsular mountain ranges, with the term "southern California" popularly referring to this more populated and visited zone </Li>

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