Hartline is a town in Grant County, Washington, United States. The population was 180 at the 2020 census. The high school for the Almira-Coulee/Hartline school district was located here, but moved to Coulee City, Washington in 2008. The name "Hartline" is an Americanized spelling of the German last name "Hartlein" and is an uncommon last name.
History
Hartline was named for early settler John Hartline. It was officially incorporated on March 6, 1907.
Geography
According to the United States Census Bureau, the town has a total area of , all of it land.
Climate
According to the Köppen Climate Classification system, Hartline has a semi-arid climate, abbreviated "BSk" on climate maps.