Flower Mound is a city in Denton County, Texas. As of the 2000 census, the city population was 50,702, although the U.S. Census Bureau 2005 estimate was 63,526. The name comes from a large mound located in the southern portion of the city. The mound derives its name from the profusion of wild flowers that cover its slopes; though surrounded by commercial and residential development, it is privately owned so as to be protected from further development. Flower Mound apartments for rent comparison page shows most up to date rent information on Flower Mound apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.