The minor district (king amphoe) Ubolratana was established on 20 August 1974 by splitting the three tambons, Khok Sung, Na Kham, and Ban Dong from Nam Phong district.
A new administrative division, the minor district (king amphoe) Ubolratana, was established in 1974 by separating it from Nam Phong district. This resulted in the creation of three separate tambons: Khok Sung, Na Kham, and Ban Dong.