Four districts. According to the inquiry of Zhangjiagang Municipal Network, there are 3 streets, 7 towns and 4 districts in the city, namely Zhangjiagang Modern Agriculture Demonstration Park, Zhangjiagang Economic and Technological Development Zone, Zhangjiagang Bonded Zone and Shuangshan Island Tourist Resort. Zhangjiagang is a county-level city in Jiangsu Province, managed by Suzhou City, located in the east of Chinese mainland, on the south bank of the lower reaches of the Yangtze River, and connected to Changshu in the southeast.