It spans Tsuen Wan, Kwai Chung and the eastern part of Tsing Yi Island.

Its total development area is about 24 square kilometres (9.3 sq mi).

[2] Despite being a part of the New Territories, the town is also considered a part of the Hong Kong metro area by the Planning Department and Urban Renewal Authority.

[3][4] Along with Hong Kong Island and Kowloon, it is the only area in the New Territories classified as the core urban area of Hong Kong.

[5] Part of this is because the town was developed early and is not geographically separated from Kowloon by hills.