Boise is located on the Boise River, in the southwestern part of the state. Corporate headquarters of several major firms are located in Boise; among them are makers of computer microchips, processed foods, and forest products as well as construction and service companies. Boise is the economic hub of Idaho’s only metropolitan area and provides financial, medical, and commercial services for much of southern Idaho and portions of eastern Oregon. A 2006 real estate survey has estimated the population of Boise, Idaho at 198,638.