The minor district (king amphoe) was created on 1 April 1991, when the six tambons Khok Tan, Huai Ta Mon, Huai Tuekchu, Lalom, Takhian Ram, and Dong Rak were split off from Khunkhan district.[1] It was upgraded to a full district on 8 September 1995.[2]
The district is divided into seven sub-districts (tambons), which are further subdivided into 85 villages (mubans). There are no municipal (thesaban) areas, and seven tambon administrative organizations (TAO).