The city of Lake Forest is located in Orange County, California. As of the 2010 census, the city had a population of 77,264. On December 20, 1991, Lake Forest incorporated as a city. Prior to incorporation, the community was called El Toro. The master-planned developments of Foothill Ranch and Portola Hills were included in the city limits of Lake Forest after a vote was taken in 2000. Northeastern boundaries of the city were expanded with new homes and commercial centers. Among the most safe cities in the country, Lake Forest is ranked number one.