sentences:  In 2009 the Fowler Ridge Wind Farm opened nearby, giving Benton County one of the largest concentrations of wind turbines in the United States east of the Mississippi River.Benton County's western border is shared with the state of Illinois and Iroquois County; Vermilion County is to the southwest and shares a small portion of Benton County's border.Newton and Jasper counties lie to the north, with White and Tippecanoe counties to the east.