<Table> <Tr> <Th_colspan="2"> Autonomous City of Buenos Aires </Th> </Tr> <Tr> <Td_colspan="2"> Ciudad Autónoma de Buenos Aires </Td> </Tr> <Tr> <Td_colspan="2"> From top, left to right: panoramic view of the central business district, the Palace of the Argentine National Congress, Puente de la Mujer in Puerto Madero, tango dancers in San Telmo, Casa Rosada, the Metropolitan Cathedral, the Cabildo, the Obelisco, the Teatro Colón, La Recoleta Cemetery, the Planetario within the Palermo Woods, and Caminito in La Boca . </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> Flag </Td> <Td> Coat of arms </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td_colspan="2"> Nickname (s): The Queen of El Plata (La reina del Plata), BA, Baires </Td> </Tr> <Tr> <Td_colspan="2"> Autonomous City of Buenos Aires Location in Argentina </Td> </Tr> <Tr> <Td_colspan="2"> Coordinates: 34 ° 36 ′ 12" S 58 ° 22 ′ 54" W ﻿ / ﻿ 34.60333 ° S 58.38167 ° W ﻿ / - 34.60333; - 58.38167 Coordinates: 34 ° 36 ′ 12" S 58 ° 22 ′ 54" W ﻿ / ﻿ 34.60333 ° S 58.38167 ° W ﻿ / - 34.60333; - 58.38167 </Td> </Tr> <Tr> <Th> Country </Th> <Td> Argentina </Td> </Tr> <Tr> <Th> Established </Th> <Td> 2 February 1536 (by Pedro de Mendoza) 11 June 1580 (by Juan de Garay) </Td> </Tr> <Tr> <Th_colspan="2"> Government </Th> </Tr> <Tr> <Th> Type </Th> <Td> Autonomous city </Td> </Tr> <Tr> <Th> Body </Th> <Td> City Legislature </Td> </Tr> <Tr> <Th> Chief of Government </Th> <Td> Horacio Rodríguez Larreta </Td> </Tr> <Tr> <Th> Senators </Th> <Td> Federico Pinedo, Marta Varela, Pino Solanas </Td> </Tr> <Tr> <Th_colspan="2"> Area </Th> </Tr> <Tr> <Th> City </Th> <Td> 203 km (78 sq mi) </Td> </Tr> <Tr> <Th> Land </Th> <Td> 203 km (78.5 sq mi) </Td> </Tr> <Tr> <Th> Metro </Th> <Td> 4,758 km (1,837 sq mi) </Td> </Tr> <Tr> <Th> Elevation </Th> <Td> 25 m (82 ft) </Td> </Tr> <Tr> <Th_colspan="2"> Population (2010 census) </Th> </Tr> <Tr> <Th> City </Th> <Td> 2,890,151 </Td> </Tr> <Tr> <Th> Rank </Th> <Td> 1st </Td> </Tr> <Tr> <Th> Density </Th> <Td> 14,000 / km (37,000 / sq mi) </Td> </Tr> <Tr> <Th> Metro </Th> <Td> 13,591,863 </Td> </Tr> <Tr> <Th> Demonym (s) </Th> <Td> porteño (m), porteña (f) </Td> </Tr> <Tr> <Th> Time zone </Th> <Td> ART (UTC − 3) </Td> </Tr> <Tr> <Th> Area code (s) </Th> <Td> 011 </Td> </Tr> <Tr> <Th> HDI (2016) </Th> <Td> 0.885 Very High (2nd) </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.buenosaires.gob.ar (in Spanish) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Autonomous City of Buenos Aires </Th> </Tr>

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