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Oregon is divided into five distinct regions: the Coast Ranges, the Cascade Range, the Willamette Valley, the Columbia Plateau and the Great Basin.

Featured Article:  Geography of Oregon

Oregon, one of the Pacific Coast states of the United States. Few states rival Oregon for scenic beauty and variety. See more »

Geography of Oregon

Geography of Oregon

Oregon, one of the Pacific Coast states of the United States. Few states rival Oregon for scenic beauty and variety.

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Geography of Astoria

Astoria, Oregon, the seat of Clatsop County. It lies at the mouth of the Columbia River, about 75 miles (120 km) northwest of Portland.

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Geography of Corvallis

Corvallis, Oregon, the seat of Benton County. It is on the Willamette River, 85 miles (135 km) south of Portland.

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Geography of Eugene

Eugene, Oregon, the seat of Lane County. It is on the Willamette River, 125 miles (200 km) south of Portland.

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Geography of Klamath Falls

Klamath Falls, Oregon, the seat of Klamath County. It is on the east slope of the Cascades, 4,105 feet (1,251 m) above sea level, at the southern tip of Upper Klamath Lake, in extreme southern Oregon.

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Geography of Medford

Medford, Oregon, the seat of Jackson County. It is in the Cascade Range in southwestern Oregon.

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Geography of Portland

Portland, Oregon, the largest city in the state and the seat of Multnomah County.

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Geography of Salem

Salem, Oregon, the state capital and the seat of Marion County. It lies on the Willamette River in northwestern Oregon and is a trade center for the central Willamette Valley.

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