As of 20 19, the city has 16 districts with a total area of 6340.5 square kilometers and a built-up area of 1237.85 square kilometers. 0: 00 June 2020 165438+ 10 1 resident population is 24.8709 million. Shanghai is located in the east of China, at the mouth of the Yangtze River, bordering the East China Sea in the east and Jiangsu and Zhejiang provinces in the northwest. It is bounded by east longitude12052'-12212' and north latitude 30 40'-3 1 53'.

During the Warring States period, Shanghai was a feudal city, so it was nicknamed Shen. In the Jin Dynasty, because fishermen created the fishing tool Hu, the place where the river flowed into the sea was called Hu, so the lower reaches of Songjiang River was called Hu, and later it was changed to Shanghai, so Shanghai was called Shanghai for short. 20 19 12 15, which ranks among the top China city brands 10 of China Academy of Social Sciences.

Area code introduction

Area code refers to the telephone area code commonly used in the administrative areas of major cities in the world, which is mainly used for domestic and international long-distance telephone access. Add the area code when making an international call. For example, to make an international call from China, add 00+ country code+city code+other party's number or 00+ country code+area code+other party's number before the fixed telephone.

In China, area codes are also divided into different categories. For example, the area code of Beijing is 0 10, Shanghai is 02 1, Tianjin is 022, Chongqing is 023 and so on. These area codes are used in different regions of China, representing different administrative regions and cities.

In addition, international telephone area codes are allocated according to the E. 164 standard, which includes telephone area codes of all regions in the world. For example, the area code of the United States is 1, the United Kingdom is 44, and Japan is 8 1. These international area codes facilitate our international telephone communication.

Reference to the above content: Baidu Encyclopedia-Shanghai