Naples is a city in Collier County, Florida, United States. As of the 2020 census, the population was 19,115, down from 19,539 at the 2010 census. Naples is a principal city of the Naples–Marco Island metropolitan area, which had a population of about 375,752 as of 2020. Naples' USPS City population includes most of the communities in Collier County with the notable exceptions of Immokalee, Marco Island, Ave Maria, Everglades City, and a few others, and thus Naples' USPS City population is approximately 333,083.

Collier County is a county in the U.S. state of Florida. As of the 2020 census, its population was 375,752; an increase of 16.9% since the 2010 United States Census. Its county seat is East Naples, where the county offices were moved from Everglades City in 1962.