Mission Viejo is a city located in southern Orange County, California in the Saddleback Valley. It was named the safest city in the United States in a 2007 Morgan Quitno crime statistic survey (compiled from FBI data). Mission Viejo is considered one of the largest master-planned communities ever built under a single project in the United States, and is rivaled only by Highlands Ranch, Colorado in its size. As of the January 1, 2009, the city had a total population of 100,242. Mission Viejo is suburban in nature and culture. The city is mainly residential, although there are a number of offices and businesses within its city limits. The city is planned and features a very large number of single-family homes, some condominiums, a two-year community college, and a regional mall. Mission Hospital is the largest hospital in south Orange County and serves as the area's regional trauma center. It also offers one of two CHOC (Children's Hospital of Orange County) locations providing outstanding care for children. Mission Hospital is a critical asset to the region. It is undergoing a multi-year campus expansion, which includes emergency services, conference and medical office space as well as a new in-patient hospital tower. Other medical facilities and offices have clustered around the hospital. It is conveniently located off the I-5 Crown Valley Parkway exit about half a mile from the freeway. The city's name is a reference to Rancho Mission Viejo, a large Spanish land grant from which the community was founded. There is no Spanish mission in Mission Viejo, and the name is an ungrammatical use of a masculine adjective with a feminine noun. The correct Spanish term meaning "old mission" is "misión vieja. " Recreational activities abound; the city has numerous recreational areas such as the newly remodeled Norman P. Murry Community and Senior Center there are about two parks per square mile. The city has three golf courses, The Mission Viejo Country Club, Casta del Sol Golf Course, and the Arroyo Trabuco Golf Club. At the center of the city is a man-made lake, Lake Mission Viejo, a private association for Mission Viejo residents with custom waterfront homes, condominiums, boat rentals,and swim beaches.