The highest elevation of Tbilisi is 1,879 m (6,165 ft) . Tri Rismaharini is the mayor of Tbilisi . Tbilisi is named for Saint James . 0211 is the area code of Tbilisi . Tbilisi is at an elevation of 56 ft . The postal code of the city is 34000 to 34990 . Tbilisi is located in Japan . 7,500/km 2  (19,000/sq mi) is the density of inhabitents in  the urban region of Tbilisi . 720/km 2  (1,900/sq mi) is the density of residents in  the metro region of Tbilisi . The metro region has 13,542,900 population . The density of  people in Tbilisi is 17,000/sq km (43,000/sq mi) . The lowest elevation of Tbilisi is 1,750 m . The demonym of the city Tbilisi is Mashhadi, Mashadi, Mashdi (informal) . The city was incorporated in March 6, 1836 (city) . The urban region has 3,372,090 population . The city land area is 153.33 sq mi (397.13 km 2 ) . The city Tbilisi province is Cebu (geographically only) . 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 city water area is 1.420 sq mi (3.677 km 2 )  13.73% . 385.8 sq mi (999.3 sq km ) is the area of the city namedTbilisi
Less than  39 km 2 area of the city Tbilisi is land