024500。 According to the information of China Post official website, the postcode of Onniute Banner is 024500. Wengniute Banner is a banner under the jurisdiction of Chifeng City, Inner Mongolia Autonomous Region. Located in the central and eastern Inner Mongolia, in the middle of Chifeng City, on the left bank of the upper reaches of Xiliao River between Xilamulun River and Laoha River.