太原省
According to the General Statistics Office of the Government of Vietnam, the population of Thái Nguyên Province as of 2019 was 1,286,751 with a density of 364 people per km2 over a total land area of . The male population during this period was 629,197 while the female population was 657,554. The rural population was 876,484 against an urban population of 410,267 (about 47% of the rural population).