Thousand Oaks is a city in the northwestern part of Greater Los Angeles, approximately 15 miles from the city of Los Angeles and 40 miles from Downtown Los Angeles. The second-largest city in Ventura County, California, it is named after the many oak trees present in the area. The city forms the central populated core of the Conejo Valley. Thousand Oaks was incorporated in 1964, but has since expanded to the west and east.