Portland is the largest city in the U.S. state of Oregon and the seat of Multnomah County, located near the confluence of the Willamette and Columbia rivers. According to the 2010 Census, it had a population of 583,776, estimated to have reached 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.