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) . The demonym of the city Chengdu is Tianjinese , Tianjiner . Chengdu is located in United States . The highest elevation of Chengdu is 14,110 ft (4,300 m) . The city land area is 5.39 sq mi (13.96 km 2 ) . The Chengdu citys' lowest elevation is 7 ft . The coordinates of the city are 35°41′49″N 0°37′59″W﻿ / ﻿35.69694°N 0.63306°W . 227.70 km 2  (87.92 sq mi) is the area of the urban region of Chengdu . The city province is Alberta . Chengdu is at an elevation of 9350 ft . The water area of the city is 0.49 sq mi (1.27 km 2 ) . The city was incorporated in 1900 .  The city area code is 9 . Area: 619 km2 (239 sq mi) is the area of the city namedChengdu . The mayor of Chengdu is Maung Maung Soe . The city has the postal code 130000 . 7,500/km 2  (19,000/sq mi) is the density of inhabitents in  the urban region of Chengdu . The metro region has 4,005,015 population . This city is named after Confluence of Grand River and Gunnison River
The city is at a height of 2850 m