The Pacific Northwest (PNW, or PacNW) in its broadest definition is an area that includes part of the west coast of United States and Canada, including southeast Alaska, all of British Columbia, Washington, Oregon, Idaho, western Montana and northern California and Nevada. It is called the "Pacific" Northwest in order to distinguish it from the Northwest (the former "Northwest Territory".) In the United States its boundaries are imprecise but generally coincide with the area covered by the original Oregon Territory (created in 1848 - Oregon, Washington, Idaho and areas in Montana west of the Continental Divide). The Eastern Idaho region is sometimes excluded because of its cultural and economic ties to the Rocky Mountain region, particularly Utah. The region is culturally influenced by the upper Midwest.
Major Pacific Northwest cities in the United States include Seattle, Portland, Spokane and Boise. Vancouver and Victoria are the main Canadian cities of the region.
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