Clarkston is a city in Asotin County, Washington, United States. It is part of the Lewiston, ID-WA metropolitan area, and is located west of Lewiston, Idaho, across the Snake River.
The population of Clarkston was 7,229 in 2010 census.
Walla Walla Community College opened a branch campus in Clarkston that serves the surrounding area.
With a ZIP code of 99403, Clarkston has the highest zip code of any area in the contiguous United States.
Clarkston was first settled in 1862 by Robert Bracken, and was officially incorporated on August 14, 1902. Before becoming an official town, the area was known by various names, including Jawbone Flats, Lewiston, and Concord (after Concord, Massachusetts). The name Clarkston is a reference to William Clark, of the Lewis and Clark Expedition fame. Lewiston, across the Idaho state line from Clarkston, is named for Meriwether Lewis, and is the larger and older of the two cities. Neither Lewis or Clark ever visited the Clarkston side of the river.
Clarkston is in the Lewis-Clark Valley, at the confluence of the Snake and Clearwater rivers.