Tri-Cities metropolitan area

The Kennewick–Pasco–Richland metropolitan area—colloquially referred to as the Tri-Cities metropolitan area, and officially known as the Kennewick–Richland, WA Metropolitan Statistical Area—is a metropolitan area consisting of Benton and Franklin counties in Washington state, anchored by the cities of Kennewick, Pasco, and Richland (the Tri-Cities). As of July 1, 2022, the U.S. Census Bureau estimates the population of the metropolitan area to be 311,469,[1] making it the third-largest metropolitan area located entirely in Washington, after the Seattle metropolitan area and the Spokane metropolitan area. Although it is located outside of the metropolitan area, the CDP of Burbank (located in Walla Walla County) is part of the Tri-Cities urban area.[2]

Tri-Cities Metropolitan Area
Metropolitan statistical area
Kennewick–Richland, WA Metropolitan Statistical Area
Location of the Tri-Cities MSA in Washington
Country	United States
State(s)	Washington
Largest city	Kennewick (83,921)
Other cities	- Pasco (77,108)  - Richland (60,560)  - West Richland (16,295)  - Prosser (6,062)  - Connell (5,450)  - Benton City (3,360)  - Mesa (488)  - Kahlotus (190)
Area
• Total	2,942.5 sq mi (7,621 km2)
Highest elevation	3,527 ft (1,075 m)
Lowest elevation	265 ft (81 m)
Population  (2022)
• Total	311,469
• Rank	165th in the U.S.
• Density	95/sq mi (37/km2)

The Tri-Cities metro area is a constituent piece of the Kennewick-Richland-Walla Walla combined statistical area, which consists of the Tri-Cities (Benton and Franklin Counties) along with the Walla Walla metropolitan area (Walla Walla County).[3]