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.