(+90) 224 is the area code of Dongguan . The population of the metro region is 6,310,000 (2017) . Tri Rismaharini is the mayor of Dongguan . 16,349,831 (2nd) is the population of the urban region of Dongguan . On 1900 the city was incorporated . Dongguan is named for Joe Juneau . The city land area is 8.13 sq mi (21.06 km 2 ) . The highest elevation of Dongguan is 425 m (1,394 ft) . 0.032/sq km  (0.083/sq mi) is the density of residents in Dongguan . Dongguan is located in England . The city province is Gauteng . 4,800/km 2  (12,000/sq mi) is the density of people in  the urban region of Dongguan . Dongguan is at an elevation of 19 m . The water area of the city is 4.46 sq km  (1.72 sq mi) . The Dongguan citys' lowest elevation is 5,740 ft  . Dongguan is the government of Ministry of Culture . The city is 19.4 sq mi (50.2 sq km) in area . 4,484/km 2  (11,610/sq mi) is the density of people in  the metro region of Dongguan . The city has the postal code 8320000
There are more than 4752 inhabitents per sq km in the urban region of Dongguan