Valencia is an affluent planned community located in the City of Santa Clarita, California and Los Angeles County, California, U.S. in the northwestern corner of the Santa Clarita Valley, adjacent to Interstate 5. In 1987, it was one of the four unincorporated communities (along with Saugus, Newhall, and Canyon Country) that merged to create the city of Santa Clarita, California. As of 2008, the population of Valencia is 48,456.