The Conejo Valley is a region spanning both southeastern Ventura County and northwestern Los Angeles County in Southern California, United States. The area is bordered by the San Fernando Valley and the city of Los Angeles to the east, Simi Hills to the north, Las Posas Hills and the Santa Rosa Valley to the northwest, Conejo Mountain (also known as Conejo Hills) and Oxnard Plain to the west, and the Santa Monica Mountains and Malibu to the south, the Westside, and Pacific Ocean beyond it. The valley is located in the Santa Monica Mountains on an elevated area.
Many high-tech companies, particularly those in biotechnology, including Amgen, Baxter, General Dynamics Corporation, and Rockwell International are prevalent in the area. It also includes many other tech corporations, especially dot com companies and telecommunications like Verizon and Verizon Wireless. It also is home to many healthcare and other various companies like WellPoint, J.D. Power and Associates, Volkswagen, Audi, THQ, SAGE Publications, MacTech and cosmetics leader Jafra Cosmetics. Although the region is predominantly white with a large Hispanic minority, there is a small, but growing, Asian minority in the region.
Harold and Edwin Janss purchased ten thousand acres (40 km²) of land of what is now central Thousand Oaks from the heir of John Edwards, who had purchased the land from the de la Guerra heirs (all of the land was originally a portion of the Rancho El Conejo land grant) in 1910. A ranch, named the Janss Conejo Ranch, was utilized as a farm and to raise thoroughbred horses with the Santa Susanna Mountains and Simi Hills framing it. Television Westerns such as The Rifleman, Gunsmoke, and Bonanza were filmed in Janss Conejo between the 1950s and 1960s. It was also used as the filming locations for Disney’s Davy Crockett, King of the Wild Frontier and Westward Ho, the Wagons! both starring Fess Parker.