The cities ( defined as having at least 9,000 people living there in 2000 ) that saw the greatest increases between 1990 and 2000 were : `` Draper '' ( 248 percent ) , `` South Jordan '' ( 141 percent ) , `` Lehi '' ( 125 percent ) , `` Riverton '' ( 122 percent ) , and `` Syracuse '' ( 102 percent ) . The cities ( defined as having at least 9,000 residents in 2000 ) that saw the greatest increases between 1990 and 2000 were : Draper ( 248 percent ) , South Jordan ( 141 percent ) , Lehi ( 125 percent ) , Riverton ( 122 percent ) , and Syracuse ( 102 percent ) .