- For the region in Maine, see Greater Portland.
- Aloha - a census designated place wedged between Beaverton and Hillsboro. Residents here have always resisted annexation to either Beaverton or Hillsboro
- Beaverton - suburb 7mi/11km west of Portland growing up to become an economic powerhouse as it is home for Columbia Sportswear, Electro Scientific Industries, Nike & Tektronix.
- Forest Grove
- Hillsboro - county seat for Washington County, one of three counties making up the greater Portland metropolitan area and also a location for one of several Intel pre-fab plants.
- Lake Oswego
- Oregon City
- West Linn
- Vancouver (WA), is sometimes included in the region even though it is across the Columbia River in Washington.