Once the most rural area of Shanghai, it is now the subject of a major urban and agricultural master-plan led by Philip Enquist of SOM. With the construction of a trans-Yangtze tunnel, the island is expected to increase in population while incorporating specialized agriculture in a sustainable design. It is also a major relocation centre for migrants from Three Gorges Dam area. Chongming has an area of 1041.38 km² and a population of 694,600 as of 2001. The city of Dongtan is currently being planned in this county.
Chong Ming National Forest Park is also located there.