1,600/sq km  (4,200/sq mi) is the density of people in  the metro region of Chengdu . The density of  people in Chengdu is 280/km 2  (740/sq mi) . The highest elevation of Chengdu is 241.9 m (793.6 ft) . The postal code of the city is 21500 . Thomas Aujero Small is the mayor of Chengdu . The water area of the city is 2.52 sq mi (6.53 sq km ) . This city is named after Christopher Columbus . The metro region has 5,278,448 population . The Chengdu citys' lowest elevation is 1 m  . The land area of the city is 16.0 sq mi (41.4 sq km) . 242 is the area code of Chengdu . The density of  people in  the urban region of Chengdu is 5,400/sq km  (14,000/sq mi) . On 1799 (Guyandotte) the city was incorporated . Chengdu is at an elevation of 0.9 m . Chengdu is the government of National Park Service . January 1, 1894 is the population of Chengdu . The demonym of the city Chengdu is Tianjinese , Tianjiner . The coordinates of the city are 7°23′47″N 3°55′0″E﻿ / ﻿7.39639°N 3.91667°E
The day to day governing of the city is supervised by Thomas Aujero Small