is a neighborhood in the Santa Monica Mountains region of Los Angeles County. It is bordered by Agoura Hills to the west, Hidden Hills to the north, Topanga to the east, and the Santa Monica Mountains to the south. In February 2006, Calabasas become one of the few cities in Los Angeles County to prohibit smoking in all public places. Calabasas is also home to many wealthy and famous people. Its estimated population is 51,627 people with an average age of 32 years old.