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is a former census-designated place (CDP) in Riverside County, California, United States. It along with the neighboring communities of Quail Valley and Menifee incorporated as the City of Menifee on October 1, 2008. The population when Sun City was a CDP was 17,773 at the 2000 census. Located along Interstate 215 just south of the city of Perris.
Sun City is a master-planned community for senior citizens over age 55. The four-square mile residential community has two public golf courses, two recreation centers with tennis courts and swimming pools, and a commercial center of small shops for resident consumers.
Another development boom arrived in the late 1980's and 1990's with Menifee as another master-planned community on the southeast edge of Sun City, and as of 2005, the one-square-mile area of homes, condos, schools, retail shops, golf courses and tennis courts still grows.
is a General Acute Care Hospital in Sun City with Basic Emergency Services as of 2005.
According to the United States Census Bureau, the CDP had a total area of 7.8 square miles (20.2 km²), all of it land.