Aksu Prefecture is located in mid-Western Xinjiang, China. It has an area of 131,161 km2 (50,642 sq mi) and 2.714 million inhabitants at the 2020 census whom 715,319 lived in the built-up area made up of Aksu urban district. The name Aksu is Turkic for 'white water'. Aksu Prefecture has a 263.8 km (163.9 mi) long international boundary with Kyrgyzstan and Kazakhstan.
Outside of Aksu City with Tian Shan range in the background
The China–Kyrgyzstan border is 1,063 km (661 mi) in length and runs from the tripoint with Kazakhstan following a roughly south-west line across various mountain ridges and peaks of the Tian Shan range down to the tripoint with Tajikistan. The border divides Issyk-Kul Region, Naryn Region and Osh Region in Kyrgyzstan from Aksu Prefecture and Kizilsu Kyrgyz Autonomous Prefecture in Xinjiang Uygur Autonomous Region, China.
Boundary Stone
The Sino-Russian border set forth in the Protocol of Chuguchak (1864). Today's Sino-Kazakh/Kyrgyz border largely follows the line set in this protocol, with only fairly small changes
near Almaty
near Aksu City