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
University City, San Diego each other. University City's neighbors include: The wildlife in Rose Canyon has over 99 species of birds including the California gnatcatcher and California least tern which are considered endangered and listed federally as threatened species. The flora of the Rose Canyon is known for its vernal pools. The pools are located on the east end of the canyon adjacent to the Marine Corps Air Station Miramar (MCAS Miramar). Endemic endangered species have included the Orcutt's brodiaea ("Brodiaea orcuttii"), San Diego button celery ("Eryngium aristulatum parishii"), San Diego golden star ("Muilla clevelandii"), spreading navarretia ("Navarretia fossalis"), prostrate navarretia ("Navarretia prostrata"), California