The city land area is 16.0 sq mi (41.4 km 2 ) . 775 is the area code of Tbilisi . The city has the postal code 9XXXXXX . The density of  inhabitents in Tbilisi is 17,000/sq km (43,000/sq mi) . Population: 3,160,000 (2006) is the population of the urban region of Tbilisi . On July 22, 1882 the city was incorporated . The Tbilisi citys' lowest elevation is 1,240 ft . Tbilisi is located in South Korea . The density of  inhabitents in  the urban region of Tbilisi is 4,800/km 2  (12,000/sq mi) . Tbilisi is at an elevation of 72 ft . The province of the city Tbilisi is Sindh . The Tbilisi city highest elevation is 241.9 m (793.6 ft) . The coordinates of the city are 39°12′45.05″N 140°53′11.217″E﻿ / ﻿39.2125139°N 140.88644917°E﻿ / 39.2125139; 140.88644917 . The water area of the city is 28.08 km 2  (10.84 sq mi) . This city is named after Confluence of Grand River and Gunnison River . Ken Christian is the mayor of Tbilisi . 2,200/km 2  (5,700/sq mi) is the density of residents in  the metro region of Tbilisi . The city Tbilisi demonym is Alexandrian, Alexandrine (Arabic: إسكندراني‎) . The metro region has 6,310,000 (2017) population . Tbilisi is the government of National Park Service
There are more than 12653 people per sq mi in the urban region of Tbilisi