The density of  inhabitents in Tbilisi is 17,000/sq km (43,000/sq mi) . The land area of the city is 16.0 sq mi (41.4 km 2 ) . The postal code of the city is 9XXXXXX . 4,800/km 2  (12,000/sq mi) is the density of inhabitents in  the urban region of Tbilisi . The city province is Sindh . 775 is the area code of Tbilisi . The population of the urban region is Population: 3,160,000 (2006) . The city water area is 28.08 km 2  (10.84 sq mi) . 2,200/km 2  (5,700/sq mi) is the density of residents in  the metro region of Tbilisi . 39°12′45.05″N 140°53′11.217″E﻿ / ﻿39.2125139°N 140.88644917°E﻿ / 39.2125139; 140.88644917 are the coordinates of the city. . The population of the metro region is 6,310,000 (2017) . Tbilisi is the government of National Park Service . The city Tbilisi demonym is Alexandrian, Alexandrine (Arabic: إسكندراني‎) . Tbilisi is at an elevation of 72 ft . The mayor of Tbilisi is Ken Christian . Tbilisi is located in South Korea . The Tbilisi citys' lowest elevation is 378 m  . This city is named after Confluence of Grand River and Gunnison River . The Tbilisi city highest elevation is 241.9 m (793.6 ft) . On July 22, 1882 the city was incorporated
There are more than 16924 people per km 2 in Tbilisi