The city land area is 5.39 sq mi (13.96 km 2 ) . The postal code of the city is 130000 . Chengdu is located in United States . Chengdu is the government of U.S. National Park Service . The density of  people in Chengdu is 12,510/km 2  (32,400/sq mi) . This city is named after Confluence of Grand River and Gunnison River . The demonym of the city Chengdu is Tianjinese , Tianjiner . The city water area is 0.49 sq mi (1.27 km 2 ) . The city province is Alberta . 9 is the area code of Chengdu . Chengdu is at an elevation of 9350 ft . The mayor of Chengdu is Maung Maung Soe . 227.70 km 2  (87.92 sq mi) is the area of the urban region of Chengdu . The metro region has 4,005,015 population . The city was incorporated in 1900 . The Chengdu citys' lowest elevation is 7 ft . The Chengdu city highest elevation is 14,110 ft (4,300 m) . 35°41′49″N 0°37′59″W﻿ / ﻿35.69694°N 0.63306°W are the coordinates of the city. . The density of  people in  the urban region of Chengdu is 7,500/km 2  (19,000/sq mi) . The city is Area: 619 km2 (239 sq mi) in area
Chengdu is located at 35°41′49″N 0°37′59″W﻿ / ﻿35.69694°N 0.63306°W