The minor district (King Amphoe) was created on March 5 1981, when the four tambon Si Kaeo, Phing Phuai, Sa Yao and Tum were split off from Kantharalak district.1 It was upgraded to a full district on May 26 1989.2
Administration
The district is subdivided into 7 subdistricts (tambon), which are further subdivided into 87 villages (muban). Si Rattana is a township (thesaban tambon), which covers parts of tambon Si Kaeo and Saphung. There are further 7 Tambon administrative organizations (TAO).