Boise is the capital and most populous city of the U.S. state of Idaho, as well as the county seat of Ada County. Located on the Boise River, it anchors the Boise City-Nampa metropolitan area and is the largest city between Salt Lake City, Utah and Portland, Oregon. As of the 2010 Census, the population of Boise was 205,671. It is also the 99th largest U.S. city by population. The 2012 U.S. Census Population Estimates that 212,303 people reside within the city. The Boise metropolitan area is home to about 616,500 people and is the most populous metropolitan area in Idaho, containing the state's three largest cities; Boise, Nampa, and Meridian. Boise City is the third most populous metropolitan area in the United States' Pacific Northwest region (behind only those of Seattle and Portland).