In 1939 the district Wang Ka (วังกะ) was renamed Sangkhla Buri, which was previously the name of the minor district Thong Pha Phum. On 20 May 1941 the district was downgraded to a minor district (
king amphoe) and made a subordinate of Thong Pha Phum District. It then consisted of the four
tambons: Nong Lu, Prangphle, Laiwo, and Lang Phu Sa It was again upgraded to full district status on 27 July 1965. ==Geography==