The Quad Cities metropolitan area, more formally known as the Davenport–Moline–Rock Island Metropolitan Statistical Area, is the metropolitan area associated with the Quad Cities in the U.S. states of Iowa and Illinois. The area consists of the cities of Davenport and Bettendorf in Iowa and Rock Island, Moline, and East Moline in Illinois, and their suburbs in northwest Illinois and southeast Iowa. The Quad Cities metropolitan area is also considered part of the Great Lakes Megalopolis, and is the largest metropolitan area along the Mississippi River in Iowa and between Minneapolis–Saint Paul and the St. Louis metropolitan area. The Davenport–Moline–Rock Island Metropolitan Statistical Area consists of four counties: Scott County in Iowa and Henry, Mercer, and Rock Island counties in Illinois. The MSA had an estimated population of 381,568 as of 2020, and the CSA had a population of 474,019, making it the 91st largest CSA in the nation. Communities Largest municipalities Places with 1,000 to 10,000 inhabitants Silvis, Illinois Andalusia, Illinois Aledo, Illinois Blue Grass, Iowa Buffalo, Iowa Cambridge, Illinois Carbon Cliff, Illinois Coal Valley, Illinois Colona, Illinois Eldridge, Iowa Geneseo, Illinois Hampton, Illinois Le Claire, Iowa Milan, Illinois Orion, Illinois Park View, Iowa Port Byron, Illinois Walcott, Iowa Places with fewer than 1,000 inhabitants Andover, Illinois Annawan, Illinois Atkinson, Illinois Cleveland, Illinois Dixon, Iowa Donahue, Iowa Long Grove, Iowa Matherville, Illinois Maysville, Iowa McCausland, Iowa New Liberty, Iowa North Henderson, Illinois Panorama Park, Iowa Pleasant Valley, Iowa Princeton, Iowa Riverdale, Iowa Sherrard, Illinois Unincorporated places Barstow, Illinois Creekville, Iowa Dayton, Illinois Lynn Center, Illinois Montpelier, Iowa Mount Joy, Iowa Nekoma, Illinois Osco, Illinois Ophiem, Illinois Park View, Iowa Preemption, Illinois References Metropolitan areas of Iowa Metropolitan areas of Illinois