The population of the metro region is 8,653,521 , 8,917,749 (Extended UA) . Tbilisi is located in Sanma Province, Vanuatu . Tbilisi is the government of Municipality of Quito . The density of  residents in Tbilisi is 1,100/sq km  (2,900/sq mi) . The water area of the city is 6.80 sq mi (17.62 sq km )  3.0% . This city is named after Calgary, Mull . The highest elevation of Tbilisi is 5,364 m (17,598 ft) . The density of  residents in  the metro region of Tbilisi is 1,500/km 2  (3,900/sq mi) . Tbilisi is at an elevation of 934.6 m . The Tbilisi citys' lowest elevation is 190 m  . The city has the postal code EC1701 . +226 is the area code of Tbilisi . The land area of the city is 11,609.91 km 2  (4,482.61 sq mi) . The city was incorporated in 1871 (Huntington) . Federico Gutiérrez, 2016-2019 is the mayor of Tbilisi . The coordinates of the city are 00°14′S 78°31′W﻿ / ﻿0.233°S 78.517°W . The area of the city is Area: 116 km2 (45 sq mi) . The density of  residents in  the urban region of Tbilisi is 7,500/km 2  (19,000/sq mi) . The demonym of the city Tbilisi is Durbanite . The urban region is 2,122 sq mi (5,496 sq km ) in area
(+90) 224 code is required to call a number in Tbilisi