Sun City West is a census-designated place (CDP) in Maricopa County, Arizona, United States. The population was 24,535 at the 2010 census.Sun City West is located at 33°39′43″N 112°21′31″W (33.661829, -112.358740).According to the United States Census Bureau, the CDP has a total area of 11.1 square miles (28.7 km²), all of it land.
Before the community was constructed, most of the area was of farmland mainly growing cotton. Sun City West was constructed by Del Webb starting in the late-1970s as Sun City, Arizona had outgrown its boundaries. Sun City West was completely built out in 1998 and a sister city, Sun City Grand, to the west of Grand Avenue was started.