The minor district (King Amphoe) Prang Ku was established on January 1 1961, when it was split off from Khukhan district. The district is named after Prang Samong, located in Ban Ku. On July 17 1963 it was upgraded to a full district.
Administration
The district is subdivided into 10 subdistricts (tambon), which are further subdivided into 141 villages (muban). Prang Ku is a township (thesaban tambon) which covers parts of tambon Phimai and Phimai Nuea. There are further 10 Tambon administrative organizations (TAO).