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. As of 2023, the U.S. Census Bureau estimates the population of the metropolitan area to be 314,253, 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 is part of the Tri-Cities urban area.