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 City, San Diego adder's tongue fern ("Ophioglossum californicum"), California Orcutt grass ("Orcuttia californica"), and San Diego mesa mint ("Pogogyne abramsii"). University City's economy is anchored by the University of California, San Diego campus which forms the north part of the community. University City has also become a major corporate center in the San Diego region with many real estate, legal, accounting, consulting and other professional services firms relocating from offices in downtown to be closer to clients in the northern parts of the city. Thousands of workers commute from across San Diego County to University City daily. It is one of the region's