According to the postcode database, the postcode of Wushan County in Tianshui City is 74 1300.

Wushan County is a county under the jurisdiction of Tianshui City, Gansu Province, located in the southeast of Gansu Province and the west of Tianshui City. Located in the compound zone between the western part of the northern slope of Qinling Mountains and the southwest edge of the Loess Plateau in central Gansu Province, it belongs to the temperate continental semi-mixed monsoon climate.