The most populous town in Kunshan is Yushan Town. No matter the local population or the foreign population, there are the most factories here, and the largest factories are the most concentrated.

Yushan Town belongs to Kunshan City, Jiangsu Province, and is located in the middle of Kunshan City. It is the seat of Kunshan Municipal Committee and Municipal Government, 50 kilometers east of Shanghai and 37 kilometers west of Suzhou. As of 2007, the whole town has an area of 1 18 km2 and a population of 174 167.