The Palouse area of Washington encompasses these counties:
- Whitman County: This is considered the heart of the Palouse.
- Spokane County: Portions of the county fall within the Palouse region.
- Columbia County: Another key county within the Palouse.
- Garfield County: A smaller county that is part of the Palouse.
- Asotin County: Portions of this county are also included in the Palouse.