The city was incorporated in 1842 . The urban region is 14.0 sq mi (36 km 2 ) in area . Dongguan is at an elevation of 57 metres . Dongguan is the government of U.S. National Park Service . 5,400/sq km  (14,000/sq mi) is the density of residents in  the urban region of Dongguan . Dongguan is named for John Hunt . The metro region has 1,973,470 (2016 Census) population . The water area of the city is 1.63 sq mi (4.23 km 2 ) 1.1% . 33°27′S 70°40′W﻿ / ﻿33.450°S 70.667°W are the coordinates of the city. . The highest elevation of Dongguan is 1,390 m (4,560 ft) . The demonym of the city Dongguan is Marabin, Maracaibero(a), Maracucho(a) . The mayor of Dongguan is Ravinder Bhalla (term ends December 31, 2021) . 2,600/km 2  (6,800/sq mi) is the density of residents in Dongguan . The Dongguan citys' lowest elevation is 1,250 ft . 57 + 5 is the area code of Dongguan . Area : 126 km2 (49 sq mi) is the area of the city namedDongguan . 1,500/km 2  (3,900/sq mi) is the density of inhabitents in  the metro region of Dongguan . The land area of the city is 11,609.91 km 2  (4,482.61 sq mi)
+374 10 code is required to call a number in Dongguan