Đông Hòa is a district-level town of Phú Yên province in the South Central Coast region of Vietnam. Đông Hòa is a new town. However it is no…Đông Hòa is a district-level town of Phú Yên province in the South Central Coast region of Vietnam. Đông Hòa is a new town. However it is now dramatically developing with a lot of foreign investments such as Hòa Hiệp and Hoa Thám Industrial zones. Notable sights in the district include Bia Mountain, Han Dam, and Vũng Rô Harbor.