The City of London (often just called ‘the City’) is the historic heart of the capital and is now one of the world’s leading financial centres. It is not a borough but is instead run by the historic City of London Corporation and is the smallest local authority in London, both in terms of area (just over a square mile) and resident population (8,618 according to 2021's Census). With such a small population, it is not possible to collate many accurate measures of poverty.