Flower Mound, city (1990 pop. 15,527), Denton co., N Texas, suburb 20 mi/32 km NW of downtown Dallas and 23 mi/37 km NE of downtown Fort Worth, in urban growth fringe of DallasFort Worth Metroplex, on NE shore of Grapevine L. reservoir (Denton Creek); 33°01'N 97°05'W. Mfg. (fabricated metal prods.). DallasFort Worth Internatl. Airport to S.