Naples is the 20th fastest growing city in America.
That's according to financial news and opinion website 24/7 Wall St.
The metro area's population rose by 10.7 percent during the past five years.
The website attributes the area's unusually high growth rate to "its status as a retirement destination," and the migration of baby boomers to warmer climates.
Nearly 30 percent of the area's population is at least 65 years old, more than double the national population.
"Normally you would say that migration is a young person's game, but some of these Florida areas may be attracting some baby boomers as well," said William Frey, a senior demographer with the Brookings Institution, a public policy think tank.
Not every city on the top 20 list is a retirement destination.
"Some cities in the sun belt — especially Phoenix and Las Vegas — took real big hits back from the end of the recession on until just a few years ago," Frey said. "As the economy has recovered, population growth in some of these cities has picked up again."
Cape Coral-Fort Myers is even higher on the list, at No. 6.
At the top of the heap is The Villages, also in Florida. It's followed by Midland, Texas.
Here is the full list from 24/7 Wall St.:
1. The Villages, FL
2. Midland, TX
3. Odessa, TX
4. Austin-Round Rock, TX
5. Myrtle Beach-Conway-North Myrtle Beach, SC-NC
6. Cape Coral-Fort Myers, FL
7. St. George, UT
8. Bismarck, ND
9. Greeley, CO
10. Raleigh, NC
11. Houston-The Woodlands-Sugar Land, TX
12. Fargo, ND-MN
13. Orlando-Kissimmee-Sandford, FL
14. Charleston-North Charleston, SC
15. Auburn-Opelika, AL
16. Daphne-Fairhope-Foley, AL
17. Crest view-Fort Walton Beach-Destin, FL
18. Bend-Redmond, OR
19. Fort Collins, CO
20. Naples-Immokalee-Marco Island, FL