The highest elevation of Chengdu is 14,110 ft (4,300 m) . The area of the urban region is 227.70 km 2  (87.92 sq mi) . The population of the metro region is 4,005,015 . Chengdu is at an elevation of 2850 m . 9 is the area code of Chengdu . The city Chengdu demonym is Tianjinese , Tianjiner . The Chengdu citys' lowest elevation is 7 ft . The density of  people in  the urban region of Chengdu is 7,500/km 2  (19,000/sq mi) . Chengdu is the government of U.S. National Park Service . 35°41′49″N 0°37′59″W﻿ / ﻿35.69694°N 0.63306°W are the coordinates of the city. . The province of the city Chengdu is Alberta . The city is Area: 619 km2 (239 sq mi) in area . The city water area is 0.49 sq mi (1.27 km 2 ) . The city land area is 5.39 sq mi (13.96 km 2 ) . The postal code of the city is 130000 . The density of  people in Chengdu is 12,510/km 2  (32,400/sq mi) . Chengdu is located in United States . Chengdu is named for Confluence of Grand River and Gunnison River . The city was incorporated in 1900 . Maung Maung Soe is the mayor of Chengdu
The zip code of the city Chengdu is 1100