Claremont is a suburban city on the eastern edge of Los Angeles County, California, United States, 30 miles (48 km) east of downtown Los Angeles. It is in the Pomona Valley, at the foothills of the San Gabriel Mountains. Claremont is home to the Claremont Colleges and other educational institutions, and the city is known for its tree-lined streets with numerous historic buildings. Because of this, it is sometimes referred to as 'The City of Trees and Ph.Ds'.