Pine Valley is a small, unincorporated community located in San Diego County, California. Nestled in the scenic Cleveland National Forest, Pine Valley is known for its beautiful landscapes, outdoor recreational opportunities, and a tranquil, rural atmosphere. It is Around 3,736 feet (1,139 meters) above sea level. The population was 1,510 at the 2010 census, up from 1,501 at the 2000 census.