Little Elm is a city in Denton County, Texas, United States, and a part of the Dallas–Fort Worth metroplex. It is an extended suburb of Denton; its population was 46,453 as of the 2020 census. In 2000, the census population was at 3,646. By the 2010 census, the city total had jumped to 25,898, making Little Elm one of the fastest-growing municipalities by percentage in Texas since 2000. The July 1, 2022 census estimates Little Elm's population as 55,357.

Denton County is located in the U.S. state of Texas. As of the 2020 census, its population was 906,422, making it the seventh-most populous county in Texas. The county seat is Denton. The county, which was named for John B. Denton, was established in 1846. Denton County constitutes part of the Dallas–Fort Worth metroplex. In 2007, it was one of the fastest-growing counties in the United States.