The Santa Rosa Valley is a small valley and rural unincorporated community in Ventura County, California about 5 miles (8.0 km) long (east to west) and 2 miles (3.2 km) wide (north to south). This community is sometimes considered to an outlying neighborhood of Camarillo, although not within its territorial limits. It is bordered on the south by Wildwood Park and on the north by Las Posas Hills.