According to Heart of Washington, Whitman County produces more barley, wheat, dry peas, and lentils than any other county in the United States.
Whitman County is part of the Palouse, a wide and rolling prairie-like region of the middle Columbia basin.
Whitman County, Washington (Wikipedia) Whitman County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 47,973. The county seat is Colfax, and its largest city is Pullman.
