Geography of the Pacific Northwest

Oregon ( , ) is a state in the Pacific Northwest region of the United States. It is a part of the western United States, with the Columbia River delineating much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42° north parallel delineates the southern boundary with California and Nevada. The western boundary is formed by the Pacific Ocean.

state of the United States of America

province of Canada

region of western North America

marginal sea of the Pacific Ocean in the Canadian province of British Columbia and the U.S. state of Washington

region of Alaska, USA

geographical region of the United States