Yên Bái

Yên Bái is a former city in Vietnam, located in the province of Yên Bái in the north-east region of the country. The city bordered the former districts of Yên Bình District and Trấn Yên District and was a settlement along the banks of the Red River, one of the important trading hubs between the highlands and the lowlands of Northern Vietnam. The Vietnamese Wikipedia article gives its area as 106.83 square kilometres and its population in 2022 as 147,172 people, a density of 1,378 per square kilometre, and describes it as bordered by Yên Bình district to the east and north, Trấn Yên district to the west and Hạ Hòa district of Phú Thọ province to the south. The population has the character of an urban highland population: at the start of the 20th century the town was thinly settled, mostly by Kinh people, and the French railway from Haiphong through Hanoi to Lào Cai and the policy of small plantations brought more settlers along the Red River.