Either "The Villages" or "Lady Lake" should work. I've found that the best way to resolve the address in accordance with the U.S.Postal Service's comprehension is to research it at
http://zip4.usps.com/zip4/
Some computer systems do not recognize TV as a valid address (probably because we don't actually have a "real" post office), and substitute Lady Lake instead. I get mail addressed to both, but always use TV in my own addresses.
SWR