Newbury Park is a town located mostly within the western Thousand Oaks city limits in Ventura County, California, United States. It makes up all of ZIP code 91320, and is within area code 805. Lying within the Conejo Valley in the northwestern part of the Greater Los Angeles Area, Newbury Park abuts the Santa Monica Mountains. It is approximately 35 miles (56 km) from Downtown Los Angeles and less than 7 mi (11 km) from the Los Angeles County border in Westlake Village. The closest coastal city is Malibu, 22 mi (35 km) from Newbury Park, which may be reached through winding roads or hiking trails crossing the Santa Monica Mountains. About 28,000 of Thousand Oaks' 110,000 residents reside in Newbury Park. Newbury Park makes up around 40 percent of Thousand Oaks' total land area.