Dongguan is the government of U.S. National Park Service . The area of the urban region is 14.0 sq mi (36 km 2 ) . Dongguan is at an elevation of 187 ft . The density of  people in  the metro region of Dongguan is 1,500/km 2  (3,900/sq mi) . The population of the metro region is 1,973,470 (2016 Census) . Area : 126 km2 (49 sq mi) is the area of the city namedDongguan . 57 + 5 is the area code of Dongguan . On 1842 the city was incorporated . The coordinates of the city are 33°27′S 70°40′W﻿ / ﻿33.450°S 70.667°W . The Dongguan citys' lowest elevation is 380 m  . This city is named after John Hunt . The demonym of the city Dongguan is Marabin, Maracaibero(a), Maracucho(a) . The highest elevation of Dongguan is 1,390 m (4,560 ft) . The water area of the city is 1.63 sq mi (4.23 km 2 ) 1.1% . The density of  residents in Dongguan is 2,600/km 2  (6,800/sq mi) . 5,400/sq km  (14,000/sq mi) is the density of residents in  the urban region of Dongguan . The mayor of Dongguan is Ravinder Bhalla (term ends December 31, 2021) . The city land area is 11,609.91 km 2  (4,482.61 sq mi)
The urban region of Dongguan is 737 sq mi