Oregon

Columbia River Gorge

Oregon, constituent state of the United States of America. Oregon is bounded to the north by Washington state, from which it receives the waters of the Columbia River; to the east by Idaho, more than half the border with which is formed by the winding Snake River and Hells Canyon; to the south by Nevada and California, with which Oregon shares its mountain and desert systems; and to the west by the Pacific Ocean, which produces the moderate climate of Oregon’s western lands. The capital is Salem, in the northwestern part of the state.

Crater Lake

Admitted to the union as the 33rd state on February 14, 1859, Oregon comprises an area of startling physical diversity, from the moist rainforests, mountains, and fertile valleys of its western third to the naturally arid and climatically harsh eastern deserts. Mountains, plateaus, plains, and valleys of different geologic ages and materials are arrayed in countless combinations, including such natural wonders as the Columbia River Gorge, Oregon Caves National Monument, Crater Lake National Park, the majestic snow-covered peaks of the Cascade Range, and the central Oregon “moon country” (lava fields that served as a training site for astronauts in the U.S. space program in the 1960s). The name Oregon is thought to be Native American in origin.

The forested mountains of western and northeastern Oregon have supplied the traditional core of the state’s economy. Its many forest-product plants produce a major portion of the country’s softwood lumber, much of its soft plywood, and large quantities of hardboard, pulp, and paper. Nationally, Oregon ranks at or near the top among all states in the production of wood products. In addition, the multipurpose development of the Columbia River system provides huge quantities of electricity, water for irrigation and industry, shipping channels, and water for recreation. The heartland of Oregon, however, is the Willamette River valley, containing the major cities of Portland, Eugene, and Salem and a rich and diversified agriculture. Area 98,379 square miles (254,800 square km). Pop. (2020) 4,237,256; (2022 est.) 4,240,137.