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Coronado, since the 1980s also mistakenly known as Coronado Island, is a resort city located in San Diego County, California, across and around San Diego Bay from downtown San Diego. Its population was 24,697 at the 2010 census, up from 24,100 at the 2000 census. It is part of the San Diego County, California.
Coronado lies on the geographic combination of an island and a tombolo connected to the mainland called the Silver Strand. Coronado is a tied island, connected by a tombolo. In 2012, Dr. Stephen Leatherman, Director of the Laboratory for Coastal Research, ranked Coronado Beach as the best beach in the United States.