Multimillion-dollar beachfront homes, gated communities, and lavish golf courses are common in Collier County, Florida. Collier—a Gulf of Mexico–facing county near the state’s southern tip—is a popular destination for wealthy retirees and others seeking a resort-style lifestyle either part time or year round. The county, whose largest city is Naples, had the highest per-capita personal income of any county in the state in 2015.

Read more at UrbanLand.