Cau Giay is an urban district of Hanoi, the capital city of Vietnam. The district currently has eight wards, covering a total area of 12.32 km2 (4.76 sq mi). It is bordered by Ba Dinh district, Dong Da district, Nam Tu Liem district, Thanh Xuan district, Tay Ho district, Bac Tu Liem district. As of 2019, there were 292,536 people residing in the district.