Newbury Park is a town located mostly within the western Thousand Oaks city limits in Ventura County, California, United States. 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. Newbury Park makes up around 40 percent of Thousand Oaks’ total land area.

While the Conejo Valley is generally cooler than the San Fernando and Simi Valleys, the temperature remains temperate year-long in Newbury Park. The region has a mild, year-round Mediterranean climate or Dry-Summer Subtropical zone climate, with warm, sunny, dry summers and cool, rainy winters.