The most populous area of the state, the Southern California Region consists of the counties of Imperial, Los Angeles, Orange, Riverside, San Bernardino, San Diego and Ventura. It includes the entire metropolitan area of Los Angeles, and the regions Coachella Valley and Inland Empire. Parts of the regions Central Coast, Channel Islands and Deserts are also within the boundaries of the area. Sites related to Imperial county and/or San Diego county in addition to all or part of the Los Angeles metropolitan area are listed in this category. This includes organizations or businesses with widespread locations within the region, and guides relating to similarly large areas.