Would you like to ask the postal code of Xindu sanhe town? The postcode of Xindu sanhe town is 6 10503. According to the national postal code database, the postal code of Xindu District in Chengdu, Sichuan Province is 6 10500, and the postal code of sanhe town is 6 10503. You can mail things according to the postal code. So the postcode of Xindu sanhe town is 6 10503.