Biohazard Cleanup Near Highlands Kennewick, WA

Kennewick is a city in Benton County, Washington, on the southwest bank of the Columbia River, and it is the most populous of the three Tri-Cities, alongside Pasco and Richland.

Kennewick was incorporated on February 5, 1904.

The 2020 census counted 83,921 residents in Kennewick, and Census QuickFacts puts the city at about 31,372 households for 2020–2024.

Kennewick sits just southeast of the confluence of the Columbia and Yakima rivers and across the river from the Columbia's confluence with the Snake River.

Much of Kennewick's mid-20th-century growth was driven by commuters traveling to the Hanford Site near Richland and to McNary Dam construction.

The four-lane Blue Bridge opened in 1954 to carry traffic between Kennewick and Pasco, and the cable-stayed Cable Bridge replaced the old Green Bridge in 1978.

In July 1996, two spectators at the hydroplane races found a skull in Columbia Park that proved to be 'Kennewick Man,' a roughly 8,400- to 8,700-year-old skeleton and one of the most complete ever found of its age in the Americas.

DNA testing in 2015 confirmed Kennewick Man, called the Ancient One by area tribes, was most closely related to Native Americans, and his remains were returned to the tribes and reburied in 2017.

Columbia Park, where Kennewick Man was discovered, is Kennewick's large riverfront park along the Columbia River.