Moline (pron.: /moÊËliËn/ moh-LEEN) is a city located in Rock Island County, Illinois, United States, with a population of 43,977 in 2010. Moline is one of the Quad Cities, along with neighboring East Moline and Rock Island in Illinois and the cities of Davenport and Bettendorf in Iowa. The Quad Cities has a population estimate of 381,342. The city is the ninth-most populated city in Illinois outside of the Chicago Metropolitan Area. The corporate headquarters of Deere & Company is located in Moline, as is the headquarters of Kone in the United States, Quad City International Airport, Niabi Zoo, Black Hawk College, and the Quad Cities campus of Western Illinois University-Quad Cities. Moline is a retail hub for the Illinois Quad Cities, as Southpark Mall and numerous big-box shopping plazas are located in the city.