The SW1Y 4SX postcode was located in Westminster, Westminster postcode town, within London, England region.
It is now a terminated postcode, it was a Large User postcode introduced in 1988-03 and terminated on 1991-12.
| Name | Type |
|---|---|
| OA21CD | E00023935 |
| LSOA21CD | E01004736 |
| MSOA21CD | E02000977 |
| MSOA21 | Strand, St James & Mayfair |
| Postcode Area | SW1Y |
| Ward | St James's |
| LTLA22 | Westminster |
| UTLA22 | Westminster |
| Region | London |
| Country | England |
| Co-ordinates | [ -0.1338935533915477, 51.50947461680545 ] |