Corona is a city in northwestern Riverside County, California, United States, directly bordering Orange and San Bernardino counties. Its current mayor is Jacque Casillas. At the 2020 census, the city had a population of 157,136, up from 152,374 at the 2010 census. Corona is surrounded by Riverside to the east, Norco to the north and northeast, Yorba Linda to the northwest, Cleveland National Forest and the Santa Ana Mountains to the west, southwest, and south. Several unincorporated communities are along the rest of the city's borders. Downtown Corona is approximately 48 miles (77 km) southeast of Downtown Los Angeles and 95 miles (153 km) north-northwest of San Diego.