| Changzhutan | |
| Native Name: | 长株潭城市群 |
| Settlement Type: | Metropolitan area |
| Subdivision Type: | Country |
| Subdivision Name: |  China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Hunan |
| Subdivision Type2: | Largest city |
| Population Urban: | 8300000 |
| Area Total Km2: | 28087 |
| Area Urban Km2: | 1883 |
| Population Total: | 17000000 |
| Population As Of: | 2022 |
| Population Density Urban Km2: | 4400 |
| Demographics Type2: | GDP |
| Demographics2 Footnotes: | [1] |
| Demographics2 Title1: | Metropolitan area |
| Demographics2 Info1: | ¥ 2.029 trillion US$ 301 billion (2022) |
Changzhutan or Chang-Zhu-Tan, also Greater Changsha Metropolitan Region or Changsha-Zhuzhou-Xiangtan City Cluster 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 28087km2.
| Area (km2) | Population (2022) | GDP (CN¥) | GDP (US$) | |
|---|---|---|---|---|
| Changsha (Chang) | 11,819 | 10,420,600 | CN¥ 1,397 billion | US$ 208 billion |
| Zhuzhou (Zhu) | 11,262 | 3,871,100 | CN¥ 362 billion | US$ 54 billion |
| Xiangtan (Tan) | 5,006 | 2,726,200 | CN¥ 270 billion | US$ 40 billion |
| Changzhutan | 28,087 | 17,000,000 | CN¥ 2,029 billion | US$ 301 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]