Wuci Township lies in the west of Taichung County. It borders Shalu Township to the east and face Taiwan Strait to the west. The width from the east to west is 3.75 kilometers. It borders Chingshuei Township to the north and Longjing Rural Township to the south. The length from north to south is 4.419 kilometers.

　　Wuchi Township shapes like a rectangle, with its topography sliding slightly from northeast to southwest. Averagely, the altitude is 4.7 above the sea level. The total area is 18.4063 square kilometers.

　　There are 14 neighborhoods in Wuci Township, namely Tingliao, Hsiaoliao, Jhongjheng, Jhongho, Wenhua, Anjen, Tsaonan, Nanjien, Fude, Dazhuan, Dacun, Hsinnong, Yungnin and Yungan. The population is estimated to be 54,960 people as of Aug, 2008. The total households are 15,709. Of them, Dazhuan Neighborhood has most people living, followed by Tsaonan Neighborhood.