The land area of the city is 5.39 sq mi (13.96 km 2 ) . On 1900 the city was incorporated . 227.70 km 2  (87.92 sq mi) is the area of the urban region of Chengdu . The coordinates of the city are 35°41′49″N 0°37′59″W﻿ / ﻿35.69694°N 0.63306°W . The demonym of the city Chengdu is Tianjinese , Tianjiner . The metro region has 4,005,015 population . Maung Maung Soe is the mayor of Chengdu . The density of  people in  the urban region of Chengdu is 7,500/km 2  (19,000/sq mi) .  The city area code is 9 . The lowest elevation of Chengdu is 2 m  . The density of  people in Chengdu is 12,510/km 2  (32,400/sq mi) . The Chengdu city highest elevation is 14,110 ft (4,300 m) . Chengdu is the government of U.S. National Park Service . This city is named after Confluence of Grand River and Gunnison River . The city province is Alberta . The water area of the city is 0.49 sq mi (1.27 km 2 ) . The area of the city is Area: 619 km2 (239 sq mi) . The postal code of the city is 130000 . Chengdu is located in United States . Chengdu is at an elevation of 2850 m
More than 632 km 2 area of the city Chengdu is land