The Quad Cities is a region of cities in the U.S. states of Iowa and Illinois: Davenport and Bettendorf in southeastern Iowa, and Rock Island, Moline and East Moline in northwestern Illinois. These cities are the center of the Quad Cities metropolitan area, a region within the Mississippi River Valley, which as of 2023 had a population estimate of 467,817 and a Combined Statistical Area (CSA) population of 474,019, making it the 90th-largest CSA in the nation.

Davenport is a city in and the county seat of Scott County, Iowa, United States. Located along the Mississippi River on the eastern border of the state, it is the largest of the Quad Cities, a metropolitan area with a population of 384,324 and a combined statistical area population of 474,019, ranking as the 147th-largest MSA and 91st-largest CSA in the nation. According to the 2020 census, the city had a population of 101,724, making it Iowa's third-most populous city after Des Moines and Cedar Rapids. Davenport was founded on May 14, 1836, by Antoine Le Claire and named for his friend George Davenport.