Beverly Hills is a city in Los Angeles County, California, United States. With a population of 33,784 as of the 2000 census, it is one of the most affluent cities in the world, and is home to Hollywood celebrities, many corporate executives and numerous other wealthy individuals and families. In 2007, Coldwell Banker listed Beverly Hills as the most expensive housing market (second year in a row) in the United States, with a median home price of over $2.2 million. These homes range from the extravagant and luxurious in size, to the more elegant and modern homes, and then to the many small duplex rental units and detached homes with less than 2,000 sq ft (185 sq meters).Beverly Hills and the neighboring city of West Hollywood are together entirely surrounded by the city of Los Angeles. To be specific, Beverly Hills is bordered on the northwest by the Los Angeles neighborhood of Bel-Air and the Santa Monica Mountains, on the east by West Hollywood, the Carthay neighborhood of Los Angeles, and the Fairfax District of Los Angeles, and on the south by the Beverlywood. The area's "Platinum Triangle" of affluent neighborhoods is formed by the city of Beverly Hills and the Los Angeles neighborhoods of Bel Air and Holmby Hills.