Yumen, a county-level city in Gansu Province, is managed by Jiuquan City. It is located in the northwest of Gansu Province, in the west of the Hexi Corridor, connecting Jiayuguan City and Jinta County in the east, Guazhou County in the west, and Subei Mongolian Autonomous County in the north and south. Its geographical coordinates are between 96 ° 15 '- 98 ° 30' E, 39 ° 40 '- 41 ° 00' N, and 114 kilometers from east to west.

According to the data of the seventh population census, as of 0:00 on November 1, 2020, the permanent population of Yumen City is 137736.

With a total area of 13500 square kilometers, by 2020, Yumen City will have 2 new and old urban areas, 3 industrial parks, 12 towns, and 29 ethnic groups, including Han, Hui, Mongolian, Tibetan, and Dongxiang.

In 2021, the city's GDP will be 22.25 billion yuan, up 6.5% over the previous year; The per capita GDP was 161991 yuan, an increase of 7.5% over the previous year.