Hòa Bình Province
Lương Sơn is a rural district of Hòa Bình Province in the Northwest region of Vietnam, around 40 km from Hanoi. As of 2019, the district had a population of 99,457, with Muong people accounting for about 70% of the population. The district covers an area of 369.85 km2. The district capital lies at Lương Sơn.