The density of  residents in  the urban region of Chennai Madras is 7,500/km 2  (19,000/sq mi) . This city is named after Cartagena, Spain . The density of  inhabitents in  the metro region of Chennai Madras is 4,300/km 2  (11,000/sq mi) (2019) . The demonym of the city Chennai Madras is Capetonian . The city water area is 0.49 sq mi (1.27 km 2 ) . On March 6, 1836 (city) the city was incorporated . Pedrito Tomas Pereira Caballero is the mayor of Chennai Madras . The city province is Sindh . Chennai Madras is at an elevation of 33 ft . Area: 116 km2 (45 sq mi) is the area of the city namedChennai Madras . 7,133.2/km 2  (18,537.9/sq mi) is the density of residents in Chennai Madras . Chennai Madras is the government of Ministry of Culture . The population of the metro region is Population: 13,123,948 . The highest elevation of Chennai Madras is 1,390 m (4,560 ft) . The coordinates of the city are 14°41′34″N 17°26′48″W﻿ / ﻿14.69278°N 17.44667° . 606.5 sq km (234.2 sq mi) is the area of the urban region of Chennai Madras . The city has the postal code 080020 . The lowest elevation of Chennai Madras is 1,750 m .  The city area code is +966-12
People of the city Chennai Madras are called by Capetonian