Portland (/ˈpɔːrtlənd/ PORT-lənd) is the most populous city in the U.S. state of Oregon. Located in the Pacific Northwest at the confluence of the Willamette and Columbia rivers, it is the 28th-most populous city in the United States, sixth most populous on the West Coast, and third most populous in the Pacific Northwest (after Seattle and Vancouver, British Columbia) with a population of 652,503 at the 2020 census. The Portland metropolitan area, with over 2.54 million residents, is the 26th-largest metropolitan area in the nation. Almost half of Oregon's population resides within the Portland metro area. It is the county seat of Multnomah County, Oregon's most populous county.
The Portland area was shaped by massive ice-age floods. It was inhabited by the Chinookan peoples. European American settlers arrived in the 1840s. Portland was named after Portland, Maine, following a coin toss, which was itself named after England's Isle of Portland. In the 19th century, Portland became a major port and lumber center and gained a reputation for saloons and crime. The 20th century saw population growth, World War II shipbuilding, Japanese-American internment, organized crime, and a hippie/counterculture movement. Since the 1990s, it has experienced growth in the technology sector and rising housing costs. It saw major George Floyd protests in 2020–2021.