Hounslow (/ˈhaʊnzloʊ/) is the principal town in the London Borough of Hounslow in Greater London. It is a suburban district 10.6 miles (17 km) west south-west of Charing Cross. It forms a larger post town in the TW postcode area and is an economic hub within the capital; it has a large shopping centre which adjoins its high street and a large number of restaurants, cafés and small businesses, many of which are associated with product assembly, marketing, telecommunications and London Heathrow Airport. A minority of its workers are employed in Central London, to which the town is connected by rail and tube. Hounslow is part of the TW3 postcode area, though some areas to the west are in TW4 instead. The population of the town, comprising the Hounslow Central, Hounslow Heath and Hounslow South wards, was 41,304 in the 2011 census.