The city has the postal code 3000 00 -  3019 00 . This city is named after Henry E. Huntington . The province of the city Hanoi is East Java . 595,061 is the population of Hanoi . The urban region is 1,770 sq mi (4,600 km 2 ) in area . 3,423/km 2  (8,870/sq mi) is the density of residents in  the urban region of Hanoi . Hanoi is at an elevation of 13 ft . The city land area is 16.0 sq mi (41.4 sq km) . The area of the metro region is Area: 2,493.86 km2 (962.88 sq mi) . The lowest elevation of Hanoi is 3 ft . Hanoi is the government of Municipality of Quito . +226 is the area code of Hanoi . The city Hanoi demonym is Istanbulite  . The highest elevation of Hanoi is 5,364 m (17,598 ft) . 3,200/km 2  (8,200/sq mi) is the density of residents in Hanoi . Hanoi is located in Zambia . 1,275/km 2  (3,300/sq mi) is the density of residents in  the metro region of Hanoi
Hanoi is 13 ftabove sea level