Zhoukou (Chinese: 周口; pinyin: Zhōukǒu; Wade–Giles: Chou-k’ou; postal: Chowkow) is a prefecture-level city in eastern Henan province, China. It borders Zhumadian to the southeast, Xuchang and Luohe to the west, Kaifeng to the northwest, Shangqiu to the northeast, and the province of Anhui on all other sides.
Its population was 8,953,793 inhabitants at the 2010 census whom 535,738 lived in the built-up (or metro) made up of Chuanhui district and the northern part of Shangshui county. The prefecture-level city of Zhoukou administers 2 districts, 1 county-level city and 7 counties. Chuanhui District (川汇区)Huaiyang District (淮阳区)Xiangcheng City (项城市)Shenqiu County (沈丘县)Dancheng County (郸城县)Luyi County (鹿邑县)Taikang County (太康县)Fugou County (扶沟县)Xihua County (西华县)Shangshui County (商水县)For thousands of years, Chen (now at Huaiyang) had been the center of this area and a nationally well-known city. The ancient city site founded at Pingliangtai (near Huaiyang) is over 4600 years old, which is one of the oldest cities in China. According to the legend, Fu Xi, the first of the Three Sovereigns of ancient China, died in the city. During the Spring and Autumn period, Chen was the capital of Chen State and then annexed by Chu. Therefore, the area was usually referred to as "Chen Chu" in ancient times.