About Koriya
Koriya district, officially known as Korea district, is a district in the north-western part of the Chhattisgarh state in Central India. The administrative headquarters of the district is Baikunthpur. Koriya District lies between 22°56′ and 23°48′ North and 81°56′ and 82°47′ East. It is bounded on the north by Sidhi District of Madhya Pradesh, on the south by Korba District, on the east by Surajpur District, and on the west by Anuppur District of Madhya Pradesh. Koriya District consists of five subdivisions of Baikunthpur, and Sonhat; fivetehsils four Blocks of Baikunthpur, and Sonhat ,manendragarh,khadgaon.
Source: Wikipedia