The Dongguan citys' lowest elevation is 1,750 m . The water area of the city is 4.46 sq km  (1.72 sq mi) . 19.4 sq mi (50.2 sq km) is the area of the city namedDongguan . The city has the postal code 8320000 . Dongguan is at an elevation of 62 ft . Dongguan is the government of Ministry of Culture . The city province is Gauteng . 0.032/sq km  (0.083/sq mi) is the density of residents in Dongguan . 4,484/km 2  (11,610/sq mi) is the density of people in  the metro region of Dongguan . The urban region has 16,349,831 (2nd) population . (+90) 224 is the area code of Dongguan . The density of  people in  the urban region of Dongguan is 4,800/km 2  (12,000/sq mi) . Dongguan is named for Joe Juneau . The mayor of Dongguan is Tri Rismaharini . Dongguan is located in England . The population of the metro region is 6,310,000 (2017) . The land area of the city is 8.13 sq mi (21.06 km 2 ) . The highest elevation of Dongguan is 425 m (1,394 ft) . The city was incorporated in 1900
1,750 m is the lowest point in Dongguan