Đông Hà is the capital of Quảng Trị Province, in the North Central Coast region, the Central of Vietnam. As of 2024, the city's population is ap…Đông Hà is the capital of Quảng Trị Province, in the North Central Coast region, the Central of Vietnam. As of 2024, the city's population is approximately about 164,228 people. It is located 68.6 miles north of Huế and 101 miles south of Đồng Hới in Quảng Bình Province.