Xikou, Chiayi  Xikou Township or Sikou Township () is a rural township in Chiayi County, Taiwan. Xikou's former name () refers to the confluence of two rivers, which are Huasing River (華興溪) and Sandie River (三疊溪) coming from the northwest and southwest respectively. Han Chinese firstly settled around the area of Xikou Township since more than 200 years ago. In early 1980s, its population peaked at 21,000 but has been declining since then. It has a population total of 14,769 and an area of 33.0463 km2. It is the smallest area of any city or township of Chiayi County. The township land is generally well-watered and flat. The township consists of 14 villages, which are Bencuo, Chailin, Deisi, Linjiao, Liougou, Meibei, Meinan, Miaolun, Pingding, Sibei, Sidong, Sisi, Youdong and Yousi. Agriculture is the predominant industry in the county. Crops include tomatoes and muskmelon. There are only a few factories in the area.