Changzhutan

Changzhutan or Chang-Zhu-Tan, also Greater Changsha Metropolitan Region or Changsha-Zhuzhou-Xiangtan City Cluster (simplified Chinese: 长株潭城市群; traditional Chinese: 長株潭城市群; pinyin: Cháng-Zhū-Tán Chéngshì Qún) is a city cluster in Hunan province, China, consisting of the provincial capital, Changsha and two other prefecture-level cities: Xiangtan and Zhuzhou; it is the main heavily urbanized region of Hunan and covers an area of 28,087 km² (10,844 sq mi).

Changzhutan 长株潭城市群
Metropolitan area
Changsha, clockwise from top: Skyline of Changsha, Yuehu Park, Huangxing South Pedestrian Street, Aiwan Pavilion
Country	China
Province	Hunan
Largest city	Changsha
Area
• Metropolitan area	28,087 km2 (10,844 sq mi)
• Urban	1,883 km2 (727 sq mi)
Population  (2022)
• Metropolitan area	17,000,000
• Urban	8,300,000
• Urban density	4,400/km2 (11,000/sq mi)
GDP [1]
• Metropolitan area	¥ 2.213 trillion US$ 311 billion (2024)

Jianshe South Road (建设南路) in Zhuzhou

	Area (km2)	Population (2022)	GDP (CN¥)[1]	GDP (US$)
Changsha (Chang)	11,819	10,420,600	CN¥ 1,527 billion	US$ 214 billion
Zhuzhou (Zhu)	11,262	3,871,100	CN¥ 390 billion	US$ 55 billion
Xiangtan (Tan)	5,006	2,726,200	CN¥ 296 billion	US$ 42 billion
Changzhutan	28,087	17,000,000	CN¥ 2,213 billion	US$ 311 billion

Economist Intelligence Unit identified Chang-Zhu-Tan as one of China's 13 megalopolises in its 2012 report "Supersized Cities", with an estimated 2010 population of 8.3 million and 2009 GDP of 320 million Chinese yuan (CNY)^[2] Other sources put the population at 5.92 million.^[3]

It covers an area of 1,883 km² in the urban area with a population of 5.92 million, GDP reaches 568 billion CNY (US$90 billion), GDP per capita of 96,067 CNY (US$15,665), the core area of three cities (Changzhutan metropolis) had an area of 483.77 km² in 2012.^[3] On December 14, 2007, it was issued as Comprehensive Supporting Reform Trial Areas to build a resource conserving and environment friendly society by China NDRC.

The Changsha–Zhuzhou–Xiangtan intercity railway connects the three urban cores and surrounding areas.

The area has been given a unified telephone area code.^[4]