San Diego's North County (Inland) is formed by a number of Communities (some incorporated into Cities, some not), each with a distinctive flavor and history.
North County Inland extends from the Scripps Ranch area, East of I-15 up and into Fallbrook & Bonsall. Through Poway, Rancho Bernardo, Carmel Mountain Ranch, Black Mountain, and into Escondido. North and East, this area includes Ramona and Valley Center and many unincorporated areas of San Diego. West of Escondido along I-78 corridor, this area extends to San Marcos and Vista. Some might also include the exclusive Rancho Santa Fe when describing the North/Inland area.