Gaochang or Karahoja (, ; ), is the only district and the seat of the oasis city of Turpan, in the Xinjiang Uyghur Autonomous Region, China. Its population was at the end of 2003.

Name According to the municipal government of Turpan, the district is named after the ancient city of Gaochang. It was also proposed that the district be named after Ayding Lake.

History The district was created on 12 April 2015 after Turpan was upgraded from a county-level city into a prefecture-level city. The district has the same size and population as the former Turpan county-level city.

Demographics

Subdivisions Gaochang District is divided into 4 subdistricts, 5 towns, 3 townships and 1 other township-level division.

Name Simplified Chinese Hanyu Pinyin Uyghur (UEY) Uyghur Latin (ULY) Administrative division codeSubdistricts Laocheng Subdistrict 650402001 Gaochang Subdistrict 650402002 Putaogou Subdistrict 650402003 Hongliuhe Subdistrict 650402004Towns Qiquanhu Town 650402100 Daheyan Town 650402101 Yar Town 650402102 Aydingköl Town(Aidinghu Town) 650402103 Ürümchilik Town(Putao Town) 650402104 Yalquntagh Town(Huoyanshan Town) 650402105Townships Chatqal Township 650402203 Astane Township(Sanbu Township) 650402205 Shengjin Township 650402206Township-level division Turpan Seed Stock Station 650402401

Climate Gaochang District has a cold-desert climate (Köppen climate classification Bwk). The average annual temperature in Gaochang is . The average annual rainfall is with July as the wettest month. The temperatures are highest on average in July, at around and lowest in January, at around .

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