The minor district (King Amphoe) was created on June 24 1941, when the 6 tambon Khamcha-i, Nong Sung, Ban Song, Ban Kho, Ban Lao and Nong Ian were split off from Mukdahan district.1 In 1956 it was upgraded to a full district.2 In 1982 it was one of the districts which formed then new province Mukdahan.
Administration
The district is subdivided into 9 subdistricts (tambon), which are further subdivided into 87 villages (muban). Khamcha-i is a township (thesaban tambon), which covers parts of tambon Nam Thiang. There are further 9 Tambon administrative organization (TAO).