West Richland is a city in Benton County, Washington. The population was 16,295 at the time of the 2020 census.

The city annexed the Lewis and Clark Ranch, a property along the Yakima River in 1981. Plans to develop a planned community with up to 34,000 homes were released in 2025.

Geography

According to the United States Census Bureau, the city has a total area of , of which, is land and is water.

Climate

According to the Köppen Climate Classification system, West Richland has a semi-arid climate, abbreviated "BSk" on climate maps, falling slightly short of being classified as a desert climate.

Demographics