Claremore is a city and the county seat of Rogers County in Green Country or northeastern Oklahoma, United States. The population was 19,580 at the 2020 census, a 5.4 percent increase over the figure of 18,581 recorded in 2010. Located in the foothills of the Ozark Mountains, the town is part of the Tulsa Metropolitan Area and home to Rogers State University. It is best known as the home of early 20th-century entertainer Will Rogers. This area was part of the territory of the Osage, but they were forced out under a treaty with the United States. During the Indian Removal period and until statehood, this area was a reserve of the Cherokee Nation, which had been removed from its territory in the Southeast United States. This was within what was known as the Cherokee Cooweescoowee District.