Lake Buena Vista is a city in Orange County, Florida, United States. It is mostly known for being the mailing address for Walt Disney World, although almost all of the resort facilities, including all four theme parks, are physically located in the adjacent city of Bay Lake. It is one of two Florida municipalities inside the Central Florida Tourism Oversight District, which also contains Walt Disney World, the other being Bay Lake. The permanent residential population of Lake Buena Vista was 24 at the 2020 census.