Rancho San Diego, California landscape and open-space maintenance. Rancho San Diego is served by the Cajon Valley Union School District and the Grossmont Union High School District. Steele Canyon High School and Valhalla High School are the primary schools in this location. Rancho San Diego is also home to the Cuyamaca College Coyotes. Rancho San Diego, California Rancho San Diego is a census-designated place (CDP) in San Diego County, California. The population was 21,208 at the 2010 census, up from 20,155 at the 2000 census. The area was developed as subdivisions beginning in the 1970s. Rancho San Diego is located at (32.765985, -116.921477). According
San Pasqual, San Diego County, California San Pasqual, San Diego County, California San Pasqual, the Kumeyaay pueblo, in San Diego County, California, that was once located in the San Pasqual Valley and for which the valley is named. In pre-Hispanic times the Kumeyaay had lived for centuries in the San Pasqual Valley. Following the closing of the missions by the Mexican government in 1833, the Kumeyaay moved back to their San Pasqual Valley and the Kumeyaay pueblo of San Pasqual was established on November 16, 1835. The village of San Pasqual was a stop on the road between San Diego and Sonora from the late 1820s.