Pine Valley is a community and census-designated place (CDP) in the Cuyamaca Mountains of the Mountain Empire area, in southeastern San Diego County, California.

According to the United States Geological Survey, Pine Valley is located 3,736 feet (1,139 m) above sea level, at 32°49′17″N 116°31′45″W / 32.82139°N 116.52917°W / 32.82139; -116.52917.

Interstate 8 passes east-to-west along the southern border of Pine Valley.

The Sunrise Highway marks the eastern border of the town.

The Pine Valley CDP has a total area of 7.1 square miles (18 km2), all land.

Average annual precipitation is 23.66 inches (60.1 cm),[4] mostly falling between November and March.

Snow sometimes falls during winter storms, but usually melts rapidly.At the 2010 census Pine Valley had a population of 1,510.

In the state legislature Pine Valley is located in the 36th Senate District, represented by Republican Joel Anderson, and in the 71st Assembly District, represented by Republican Randy Voepel.

[8] San Diego MTS route 888 provides service on Mondays and Fridays between El Cajon, Pine Valley, and Jacumba Hot Springs.