Moline, city (1990 pop. 43,202), Rock Island co., NW Ill., on the Mississippi River, in a coal area; inc. 1848. It is a transportation and industrial center, and has been a major producer of farm machinery since the industrialist John Deere moved there in 1847. Other manufactures are elevators and industrial equipment. A military arsenal is nearby. Moline, with Rock Island and Davenport and Bettendorf, Iowa, is part of a regional economic unit called the Quad Cities.

East Moline, city (1990 pop. 20,147), Rock Island co., NW Ill., a suburb of Moline, on the Mississippi River; inc. 1907. East Moline, along with Moline, Rock Island, and Davenport, Iowa, was formerly regarded as one of the Quad Cities, but the growth of Bettendorf, Iowa, resulted in its displacing East Moline from the group. Near East Moline are significant railroad repair shops. The city has a correctional center.