The Tulsa Metropolitan Area in the U.S. state of Oklahoma includes the city of Tulsa, Tulsa County, which extends also into Rogers County, Wagoner County, and Osage County within the larger Green Country region. The U.S. Census Bureau defines the metropolitan area (including Creek, Okmulgee, and Pawnee Counties) as the Tulsa Metropolitan area (Tulsa–Broken Arrow–Owasso), OK Metropolitan Statistical Area, with an estimated population of 961,561 and 1,131,458 people in the larger Combined Statistical area as of 2013.