South Pasadena

South Pasadena is a city in Los Angeles County, California, United States. As of the 2010 census, it had a population of 25,619, up from 24,292 in the 2000 census. It is located in West San Gabriel Valley. It is 3.42 square miles (8.9 km²) in area and lies between the city of Pasadena, of which it was once a part, and the metropolis of Los Angeles. South Pasadena is the oldest self-builder of floats in the historic Tournament of Roses Parade.