The first six digits in the ID card are administrative division codes, and the address code indicates the administrative division code of the county (city, flag, district) where the citizen's permanent residence is located when the code is assigned. Specifically, the third and fourth digits represent: the code of prefecture-level city (autonomous prefecture); The 5th and 6th digits indicate the district (county, autonomous county, county-level city) code.

Shanghai's identity card number starts with 3 10, and the numbers in different districts are different. The specific starting number is as follows: 3 10 1 16 Jinshan District 3 1 165438 Songjiang District 3 165438.

3 10 104 Xuhui District 3 10 105 Changning District 31kloc-0/06 Jing 'an District 3 10 107 Putuo District 3/kloc. 3 10 1 10 Yangpu district 31kloc-0/2 Minhang district 3 10 165438 Jiading district 31.

geographical environment

Shanghai is located between east longitude120 52'-12212' and north latitude 30 40'-3153', with a land area of 6,340 square kilometers. It is located on the west coast of the Pacific Ocean, the eastern edge of the Asian continent and the midpoint of the north and south coasts of China. It borders the Yangtze River in the north, the East China Sea in the east, Hangzhou Bay in the south and Jiangsu and Zhejiang provinces in the west.

Shanghai has a subtropical monsoon climate with four distinct seasons, abundant sunshine and rainfall. Shanghai has a mild and humid climate, with shorter spring and autumn and longer winter and summer. In 20 13 years, the average temperature in Shanghai is 17.6℃, sunshine is 1885.9 hours, and precipitation is 1 173.4 mm. More than 60% of the annual rainfall is concentrated in the flood season from May to September.

Reference to the above content: Baidu Encyclopedia-Shanghai