The minor district (king amphoe) Mae Tha was established in 1939, when it was split off from Mueang Lamphun district. It was upgraded to a full district on 22 July 1958.[1]
The Khun Tan Range stretches from north to south along the district.
Administration
The district is divided into six sub-districts (tambons), which are further subdivided into 68 villages (mubans). There are two townships (thesaban tambons): Tha Sop Sao covers parts of tambon Tha Sop Sao, and Tha Kat parts of tambon Tha Kat and Tha Khum Ngoen. There are a further six tambon administrative organizations (TAO).