Hidden Valley is a valley and unincorporated community in the Santa Monica Mountains in southwestern Ventura County. Lake Sherwood is to the east, Newbury Park is to the north and west, the Santa Monica National Recreation Area is to the south, and Potrero Valley is to the west. Hidden Valley is a highly affluent equestrian community with large single family ranch style homes on 20 acre or larger parcels of land. Hidden Valley is part of the Conejo Valley. The Circle X Ranch is directly south.