Chicheng is a county in northwestern Hebei province, China, under the administration of Zhangjiakou City. It lies in the easternmost part of Zhangjiakou's territory and borders Beijing to the southeast. The county covers a total area of 5,287 square kilometres (2,041 square miles).
Chicheng is divided into 9 towns and 9 townships. As of 2010, its population was 238,169. The county seat is Chicheng Town, and China National Highway 112 passes through the county just south of it.