Amphoe location in Surat Thani Province
|• Total||879.0 km2 (339.4 sq mi)|
|• Density||109.8/km2 (284/sq mi)|
|Time zone||THA (UTC+7)|
Originally the town was named Thathong (ท่าทอง) and was located at the shore of Khlong Thathong Mai (named Khlong Tha Phechon at that time). During the reign of King Nangklao (Rama III) the town was moved because its location was malaria-infested, and renamed to Kanchanadit. It was a provincial town (Mueang) under the control of Nakhon Si Thammarat. During the reign of Rama IV it was put under supervision of Bangkok directly. In 1899 the province was merged with Chaiya and was thus reduced to be an Amphoe.
The district is located in the eastern part of the province. It stretches from the coast to the Bandon Bay of the Gulf of Thailand in the north, the low river valley of the Tapi River to the west, and the Nakhon Si Thammarat mountain range in the south and west. The Tai Rom Yen National Park was created on December 31, 1991, protecting the forested hills of that mountain range. The main river in the district is the Thathong River, which empties into the Tapi estuary.
The main road through the district is Thailand Route 401, which connects Kanchanadit with the town Surat Thani. Thailand Route 44 begins at Route 401 and runs to the southwest as part of a landbridge across the Malay Peninsula.
The district Kanchanadit is subdivided into 13 subdistricts (tambon), which are further subdivided into 117 villages (muban). There are three subdistrict municipalities (thesaban tambon) - Kanchanadit covers the whole tambon Ka Dae, Tha Thong Mai covers parts of the tambon Tha Thong Mai, and Chang Sai the whole tambon Chang Sai. There are also 11 tambon administrative organizations (TAO), for each tambon except Ka Dae and Chang Sai which are administrated by the thesaban tambon.
- "Population statistics 2008". Department of Provincial Administration.