Dĩ An is a city of Bình Dương Province in the Southeast region of Vietnam, about 20 km north of central Ho Chi Minh City. It is 1,706 km by rail fr…Dĩ An is a city of Bình Dương Province in the Southeast region of Vietnam, about 20 km north of central Ho Chi Minh City. It is 1,706 km by rail from Hanoi. At the 2009 census the city had a population of 73,859. The town covers 60 km².