Latimer County is a county located in the southeastern part of the U.S. state of Oklahoma. Its county seat is Wilburton. As of the 2020 census, the population was 9,444. The county was created at statehood in 1907 and named for James L. Latimer, a delegate from Wilburton to the 1906 state Constitutional Convention. Prior to statehood, it had been for several decades part of Gaines County, Sugar Loaf County, and Wade County in the Choctaw Nation.