Coronado is a city in San Diego County, California, United States. The population was 24,100 at the 2000 census. Coronado is Spanish for 'the crowned one', and thusly it is nicknamed The Crown City. It is also nicknamed The Tent City, referring to tourists' tents that once lined Coronado Beach during the summer-vacation season. Coronado apartments for rent comparison page shows most up to date rent information on Coronado apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.