Newbury Park is a populated place and town in Ventura County, California, United States. Most of it lies within the western Thousand Oaks city limits while other parts of Newbury Park such as Casa Conejo and Ventu Park remain in unincorporated areas. 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 residents of Thousand Oaks reside in Newbury Park.[9] Newbury Park makes up around 40 percent of Thousand Oaks’ total land area. Newbury Park is a neighborhood of Thousand Oaks which has numerous times been ranked among the safest communities in the United States.