Quad Cities

Quad Cities, Iowa–Illinois

Davenport–Moline–Rock Island, IA–IL
Quad Cities, Iowa–Illinois Davenport–Moline–Rock Island, IA–IL
Metropolitan Statistical Area
Map of Davenport–Moline, IA–IL CSA	City of Davenport, IA City of Bettendorf, IA City of Moline, IL City of Rock Island, IL Davenport–Moline–Rock Island, IA–IL MSA Muscatine, IA μSA Clinton, IA μSA
	City of Davenport, IA City of Bettendorf, IA City of Moline, IL City of Rock Island, IL Davenport–Moline–Rock Island, IA–IL MSA Muscatine, IA μSA Clinton, IA μSA
Country	United States
State	Iowa; Illinois
Largest city	Davenport, Iowa
Other cities	Moline, Illinois; Bettendorf, Iowa; Rock Island, Illinois; East Moline, Illinois
Area
• Total	170 sq mi (400 km2)
Highest elevation	850 ft (259 m)
Lowest elevation	590 ft (180 m)
Population
• Total	379,441 (148th)
• Rank	148th in the U.S.
• Density	1,600/sq mi (618/km2)
GDP
• Total	$25.774 billion (2022)
Time zone	UTC-06:00 (CST)
• Summer (DST)	UTC-05:00 (CDT)

The Quad Cities is a region of five cities (originally Tri-Cities, later four, see History) in the U.S. states of Iowa and Illinois: Davenport and Bettendorf (the fifth to be included) in southeastern Iowa, and Rock Island, Moline and East Moline (the fourth to be included) 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.