Lake Butler is a census-designated place (CDP) and unincorporated area, completely surrounding the town of Windermere, in Orange County, Florida, United States.

The Lake Butler CDP contains the communities of Isleworth and Summerport Beach.

Lake Butler is located at 28°29′11″N 81°33′15″W / 28.486284°N 81.554170°W / 28.486284; -81.554170 (28.486284, -81.554170),[2] approximately 11 miles (18 km) west-southwest of downtown Orlando.

[8] As of the census[9] of 2000, there were 7,062 people, 2,255 households, and 2,009 families residing in the CDP.

8.0% of all households were made up of individuals, and 2.1% had someone living alone who was 65 years of age or older.

Lake Butler is within Orange County Public Schools.