Claremore is a city and the county seat of Rogers County, Oklahoma, United States. The population was 18,581 at the 2010 census, a 17.1 percent increase from 15,873 at the 2000 census. It is part of the Tulsa Metropolitan Area and home to Rogers State University. It is best known as the home of entertainer Will Rogers. The city is located in Green Country, a popular nickname for northeast Oklahoma that stems from the region's green vegetation and relatively high amount of hills and lakes compared to central and western areas of Oklahoma. Claremore lies near the Verdigris River with undulating terrain producing hills and valleys. The city's primary water sources are Claremore and Oologah Lake, both within the drainage basin of the Verdigris River.