The town is unincorporated and depends on Maricopa County for services such as law enforcement, street repairs and zoning protection. Volunteerism is strong in Sun City. The Sun City Prides is a nonprofit corporation which assists Maricopa County in keeping Sun City clean. The group has more than 300 members who help maintain the beauty of the 217 miles of streets and medians in the community. The Posse helps prevent crime through neighborhood watch programs, vacation watch, traffic control and home security programs.
Sun City is age-restricted.
One member of the household must be 55 or older and no one under age 18 is permitted residence. The population is approximately 45,000.