 Between 2000 and 2002, Flower Mound was the ninth fastest-growing municipality in the United States with a population of more than 50,000, and its population continued to increase by approximately five percent each year between 2000 and 2005.Controlled growth continues in central and western Flower Mound.Flower Mound is located approximately northwest of Dallas and northeast of Fort Worth on the border between Denton and Tarrant counties.