This city is named after Confluence of Grand River and Gunnison River . The highest elevation of Hong Kong Special Administrative Region of the People's Republic of China is 1,390 m (4,560 ft) . The city is Area: 619 km2 (239 sq mi) in area . The density of  residents in  the urban region of Hong Kong Special Administrative Region of the People's Republic of China is 3,423/km 2  (8,870/sq mi) . The land area of the city is 39.28 sq mi (101.74 km 2 ) . On December 23, 1814 (village) the city was incorporated . The density of  people in Hong Kong Special Administrative Region of the People's Republic of China is 4,062/km 2  (10,523/sq mi) . The city Hong Kong Special Administrative Region of the People's Republic of China province is Alberta . The city water area is 1.420 sq mi (3.677 km 2 )  13.73% . The density of  people in  the metro region of Hong Kong Special Administrative Region of the People's Republic of China is 4,300/km 2  (11,000/sq mi) (2019) . The Hong Kong Special Administrative Region of the People's Republic of China citys' lowest elevation is 1 m  . Hong Kong Special Administrative Region of the People's Republic of China is located in Indonesia . The postal code of the city is 16000 . The city Hong Kong Special Administrative Region of the People's Republic of China demonym is Caleño . The metro region has 4,597,134 population . Hong Kong Special Administrative Region of the People's Republic of China is the government of National Park Service . 11,609.91 km 2  (4,482.61 sq mi) is the area of the urban region of Hong Kong Special Administrative Region of the People's Republic of China . 9°1′48″N 38°44′24″E﻿ / ﻿9.03000°N 38.74000°E are the coordinates of the city. . Evelyn Trejo de Rosales (UNT) is the mayor of Hong Kong Special Administrative Region of the People's Republic of China
100.12 percentage is land in Hong Kong Special Administrative Region of the People's Republic of China