Tha Chang District is small. The distance from the city of Surat Thani is about 40 kilometers, covering an area of 39,306 rai, divided into 6 subdistricts, namely Tha Chang, Tha KhoeiKhlong Sai, Khao Than,Sawiat and Pak Chalui. The terrain of Tha Chang is a high hill area, alternating with mountains in the area of Pak Chalui. The area of Sawiat, Tha Khoei,Khlong Sai is a plain area. Suitable for farming. Tha Chang is a large source of rice that is the source of the name "Tha Chang" and rubber plantations. The eastern areas are Khao Than, Tha Chang and Tha Khoei that area of contact with the sea. The population in this area is mainly fishery.