Pullman, city, Whitman County, southeastern Washington, on the South Fork of the Palouse River, near the Idaho border; incorporated 1888. It is the seat of Washington State University (1890) and the commercial and transportation hub of a wheat-growing region. The community was settled in 1875. It is named for the American inventor George M. Pullman. Population 23,579 (1980); 23,478 (1990); 24,675 (2000).