<Tr> <Th> Metro </Th> <Td> 5,375,774 </Td> </Tr> <Tr> <Th> Demonym (s) </Th> <Td> Barcelonan, Barcelonian barceloní, - ina (ca)' barcelonés, - esa (es) </Td> </Tr> <Tr> <Th> Postal code </Th> <Td> 080xx </Td> </Tr> <Tr> <Th> Area code </Th> <Td> + 34 (E) 93 (B) </Td> </Tr>

What is the name of barcelona city centre