Mission Viejo is a city located in southern Orange County, California in the Saddleback Valley. As of the 2006 census, the city had a total population of 97,997.

Mission Viejo is surburban 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, condominiums, a community college.

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. It is mistakenly believed by some local residents that "Mission Viejo" is Spanish translation of "Old Mission"; however, the correct Spanish translation of "old mission" is "misión vieja."

Recreational activities abound; the city has numerous parks.  The city has three golf courses, The Mission Viejo Country Club, Casta del Sol Golf Course, and 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.
[Source: Wikipedia, 2008]