Rancho San Diego, California 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 to the United States Census Bureau, the CDP has a total area of , all land. The chance of earthquake damage in Rancho San Diego is much lower than California average and is much higher than the national average. The risk of tornado damage in Rancho San Diego is
San Diego the city as the ninth-most educated city in the United States, based on these figures. Public colleges and universities in the city include San Diego State University (SDSU), University of California, San Diego (UCSD), and the San Diego Community College District, which includes San Diego City College, San Diego Mesa College, and San Diego Miramar College. Private colleges and universities in the city include University of San Diego (USD), Point Loma Nazarene University (PLNU), Alliant International University (AIU), National University, California International Business University (CIBU), San Diego Christian College, John Paul the Great Catholic University, California College San Diego, Coleman