Bỉm Sơn is a district-level town of Thanh Hóa province in the North Central Coast region of Vietnam. As of 2003 the district had a population of 5…Bỉm Sơn is a district-level town of Thanh Hóa province in the North Central Coast region of Vietnam. As of 2003 the district had a population of 54,084. The district covers an area of 67 km². The district capital lies at Bỉm Sơn.