<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (August 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (August 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> Area code 203 is a North American telephone area code that is assigned to the southwestern part of Connecticut, and is overlaid with area code 475 . The numbering plan area (NPA) 203 originally covered the entire state of Connecticut when the North American Numbering Plan was created in 1947 . Today the numbering plan area stretches from Connecticut's western border, along its southern coast, to Madison, and north to Meriden . The region encompassed by 203 and 475 roughly corresponds to the Connecticut side of the New York metropolitan area . </P> <P> On August 28, 1995 the original numbering plan area was split with the rest of Connecticut being served with area code 860, which was overlaid with 959 on August 30, 2014 . </P>

Where does the area code 475 come from