Hai Ba  Trung (Trung Sisters District) is one of the four original urban districts (qua­n) of Hanoi, the capital city of Vietnam. The district currently has 18 wards, covering atotal area of 10.26 square kilometers. It is bordered by Long Bien district, Dong Da district, Thanh Xuan district, Hoa ng Mai district, Hoa n Kiem district. As of 2019, there were 303,586 people residing in the district.