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
University of California, San Diego University Rankings." UC San Diego was also ranked 38th overall in the world, and 11th in biological sciences, 16th in life sciences and medicine, 19th in economics and econometrics, 31st in mathematics, and 44th in computer science and information systems by "QS World University Rankings". In 2015 the Centre for Science and Technology Studies at Leiden University named UC San Diego 16th in the world for scientific impact. "Washington Monthly" has ranked UC San Diego first in the nation since 2010 based on its contribution to the public good in three broad categories: social mobility (recruiting and graduating low-income students),