The Desert Ridge master-planned community comprises 5,700 acres (23.07 km2; 8.91 sq mi) and is situated in the Northeast Valley of Phoenix, Arizona. As one of Arizona’s largest master-planned communities, Desert Ridge will ultimately be home to more than 50,000 residents; and a variety of residential, commercial, recreational, healthcare and employment opportunities. The community features such destinations as CityNorth, Desert Ridge Marketplace, JW Marriott Desert Ridge Resort & Spa, Mayo Clinic Hospital and American Express regional campus.
source: http://en.wikipedia.org/wiki/Desert_Ridge