Stevenson Ranch is in Los Angeles, California. It is located in the Santa Clarita Valley. Stevenson Ranch encompasses about 6.4 square miles. 1,000 acres are set aside as parks, recreation areas, and open space. There are many new homes and developments in this area. It is one of the newer communities in Santa Clarita Valley, which was ranked number 18 of the top 100 places to live by Money Magazine.