Amphoe location in Surat Thani Province
|• Total||879.0 km2 (339.4 sq mi)|
|• Density||109.8/km2 (284/sq mi)|
|Time zone||ICT (UTC+7)|
Originally the town was named Thathong (ท่าทอง) and was on 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 the supervision of Bangkok directly. In 1899 the province was merged with Chaiya and was thus reduced to amphoe status.
The district is in the eastern part of the province. It stretches from the coast to 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. Tai Rom Yen National Park was created on 31 December 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 of Surat Thani. Thailand Route 44 begins at Route 401 and runs to the southwest as part of a land bridge across the Malay Peninsula.
The Kanchanadit District 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.