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Portland, Oregon - Wikipedia, the free encyclopedia

Portland is the largest city in the U.S. state of Oregon and the seat of Multnomah County. It is located in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia rivers. The city covers 145 square miles (376 kmĀ²) and had an estimated population of 619,360 in 2014, making it the 28th most populous city in the United States. Approximately 2,348,247 people live in the Portland metropolitan statistical area (MSA), the 24th most populous MSA in the United States.

Willamette River - Wikipedia, the free encyclopedia

The Willamette River is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.

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