Corvallis is a city in central western Oregon, United States. It is the county seat of Benton County and the principal city of the Corvallis, Oregon Metropolitan Statistical Area, which encompasses all of Benton County. As of the 2010 United States Census, the population was 54,462. Its population was estimated by the Portland Research Center to be 55,298 in 2013. Corvallis is the location of Oregon State University, a large Hewlett-Packard research campus, and Good Samaritan Regional Medical Center.
Downtown circa 1920
At a longitude of 123° 17′ west, the city is the westernmost city in the contiguous 48 states with a population larger than 50,000
Corvallis is at an elevation of 235 feet (72 m) above sea level. Situated midway in the Willamette Valley, Corvallis is about 46 miles (74 km) east of Newport and the Oregon Coast, 85 miles (137 km) south of Portland, 30 miles (48 km) south of the state capital, Salem, 10 miles (16 km) southwest of Albany.
Corvallis is the largest principal city of the Albany-Corvallis-Lebanon CSA, a Combined Statistical Area that includes the Corvallis metropolitan area (Benton County) and the Albany-Lebanon micropolitan area (Linn County),which had a combined population of 202,251 at the 2010 U.S. Census.