|Country||People's Republic of China|
|Subdivisions||3 subdistricts, 6 towns|
|• Total||976.7 km2 (377.1 sq mi)|
|• Density||570/km2 (1,500/sq mi)|
|Time zone||UTC+8 (China Standard)|
Jintan, known as Jinshan (金山) in ancient times, was a township of Yanling commandery since the reign of the Emperor Yuan of Jin. Then it was promoted by its inhabitants as Jinshan county to strengthen the local vigilance in the late Sui dynasty, without permission. As a densely populated area, the county was reestablished in about 688 under the Tang dynasty, but since there was a namesake in present-day Jinhua, Zhejiang, it was named after Jintan, a hill of Mao Mountain.
On November 10, 1993, Jintan was reclassified from a county and officially became a city. In 1987, the County comprised 22 towns, with the county government located in Jincheng town. The county was part of Changzhou, Jiangsu province. Jintan has a total area of 976.7 square kilometers (301.65 sq mi). The total land area is 781.27 square kilometers (301.65 sq mi), and water covers an area of 194.22 square kilometers (74.99 sq mi). As of 2010[update], it has a permanent resident population of 552,047. Jintan is a 2-3 hour bus ride from Shanghai.
Wu Chinese is the local dialect of Jintan. Some versions include the local dialect and the northern Jiangsu dialect. A fusion of languages has been created due to the geographical location of Jintan. The language habits of migrants have influenced the local language.
Western Jintan includes the mountainous region Maoshan, which covers an area of about 223 square kilometres (86 sq mi). The highest peak of Maoshan is 372.5 metres (1,222 ft) above sea level. Flatlands lie in the east of Jintan, part of the Taihu Plain, with an area of about 752 square kilometres (290 sq mi).
Jintan District has 216 rivers with a total length of 512 kilometres (318 mi). The southeast Tiao Lake (also named Changdang Lake), covers 8,200 hectares (32 sq mi). This lake is one of the ten largest freshwater lakes in Jiangsu province.
Jintan District comes under the Northern Subtropical Monsoon climate zone. Jintan City's climate is mild and humid with four distinct seasons. The annual average temperature is 15.3 °C (59.5 °F), while average annual precipitation is 1,063.5 millimetres (41.87 in). The frost-free period covers 228 days and the average humidity is 78%.