Thanh Hóa is a province in the North Central Coast region of Vietnam. This is a relatively large province, which ranks as fifth in area and as third in population among 63 central administrative subdivisions. Its capital and largest city is Thanh Hoa City. The province is widely called Xu Thanh (The Land of Thanh). It had an area of 11,133.4 km2 and a population of approximate 3.6 million.