Naples is a city in Collier County, Florida, USA. As of 1 July 2006, the U.S. Census Bureau estimated the city's population at 21,804. Naples is the County seat of Collier County, and is a Principal City of the Naples-Marco Island, Florida Metropolitan Statistical Area, which had an estimated total population of 314,649 on 1 July 2006. Naples apartments for rent comparison page shows most up to date rent information on Naples apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.