East Moline is a city in Rock Island County, Illinois, United States. The population was 21,374 at the 2020 census. East Moline is one of the Quad Cities at the confluence of the Rock and Mississippi rivers, along with neighboring Moline and Rock Island in Illinois and the cities of Davenport and Bettendorf in Iowa. As of 2011, the Quad Cities has a population estimate of 381,342.

Rock Island County is a county located in the U.S. state of Illinois, bounded on the west by the Mississippi River. According to the 2020 census, it had a population of 144,672. Its county seat is Rock Island; its largest city is neighboring Moline. Rock Island County is one of the four counties that make up the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.