Tuyên Quang , located in the northeastern part of the country to the northwest of Hanoi, at the centre of Lô River valley, a tributary of the Red River. The delta formation in the province is called the Tonkin Delta. Its capital isTuyên Quang township.The province had a population of 746,900 in 2008, with a density of 127 persons per sqkm over a total land area of 5,870.4 square kilometres (2,266.6 sq mi).