The Tri-Cities are three nearby linked cities (Kennewick, Pasco, and Richland) at the confluence of the Yakima, Snake, and Columbia Rivers in the Columbia Basin of Eastern Washington. Each city borders one another, making the Tri-Cities seem past one uninterrupted mid-sized city. The three cities undertaking as the middle of the Tri-Cities metropolitan area, which consists of Benton and Franklin counties. The Tri-Cities urban area consists of the city of West Richland, the CDPs of West Pasco and Finley, as with ease as the CDP of Burbank, despite the latter beast located in Walla Walla county.

The ascribed 2016 estimate of MSA population of Tri-Cities is 283,846, more than 12% increase from 2010, and 2016 US MSA estimates achievement Tri-Cities as higher than 300,000. The mass population of the three major cities themselves was 193,567 at the 2010 Census. As of April 1, 2016, the Washington State Office of Financial Management, Forecasting Division estimates the cities as having a collective population of 217,430

The Tri-Cities Airport located in Pasco provides the region with poster and private air service. Pasco is the chair of Franklin County, while the extra two cities are located in Benton County. In 2010, Kiplinger rated the Tri-Cities in the middle of the Top 10 best places to lift a family, and CNN/Money ranked the Tri-Cities one of the summit 10 best bets for gains in housing value, due to its relatively stable economic conditions since the further on 2000s.

Historical collection population of Kennewick, Pasco, and Richland.

As of April 1, 2019, the population of Kennewick was estimated at 84,347 according to the Washington State Office of Financial Management, Forecasting Division.