Korat is at the western edge of the Korat Plateau. Historically, it once marked the boundary between Lao and Siamese territory. It is the gateway to the Lao-speaking northeast (Isan). Its location is 14°58.5′N 102°6′ECoordinates: 14°58.5′N 102°6′E. As of 2010, the municipal area had a population of 142,645. Archeological evidence suggests that in Sung Noen District, 32 km west of present-day Nakhon Ratchasima (Korat) there were two ancient towns called Sema (“Bai sema” (ใบเสมา) are notable artifacts of the Korat plateau) and Khorakapura.