| Postcode | W1X 3LB | 
|---|---|
| Nearest station | Green Park (0 km) | 
| Bus stops | Berkeley Street (S) Green Park (N) Conduit Street  New Bond Street (SW) Berkeley Square (N) Green Park (E) Green Park (SW) | 
| London travel zone | 1 | 
| Known addresses | 
                          No addresses found
                       | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.509462 | |
|---|---|---|
| Longitude | -0.143726 | |
| Easting | 528918 | |
| Northing | 180581 | |
| Grid reference | TQ289805 | |
| UTM reference | 30U 698202 5710349 | |
| what3words | void.seat.hours | |
| FixPhrase | cringing magnesium scrambler unlearned | |
| Plus code | 9C3XGV54+QG | |
| Altitude | 33 metres (110 feet) | |
| Sunrise (today) | 6:53 | |
| Sunset (today) | 16:37 | |
| Distance away | ||
| Distance to sea | 38.9 KMs (24.2 miles) | 
| Parish | Westminster, unparished area | E43000236 | 
|---|---|---|
| Ward | West End | E05013808 | 
| London Borough | Westminster | E09000033 | 
| County | Greater London | E11000009 | 
| Constituency (2024) | Cities of London and Westminster | E14001172 | 
| MP | Rachel Blake | Labour | 
| Police force | Metropolitan Police | |
| NUTS/ITL 3 | Westminster and City of London | |
| NUTS/ITL 2 | Inner London - West | |
| NUTS/ITL 1 | London | |
| Country | England | E92000001 | 
| Date introduced | January 1980 | 
|---|---|
| Date usage ended | July 2000 | 
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
|---|---|---|
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban major conurbation | |
| Built up area (2024) | City of Westminster | E63012036 | 
| Census output area (2021) | E00024113 | |
| Census output area (2011) | 2D3 | |
| Lower layer super output area (2021) | Westminster 018D | E01004761 | 
| Lower layer super output area (2011) | Westminster 018D | E01004761 | 
| Middle layer super output area (2021) | Strand, St James & Mayfair | E02000977 | 
| Middle layer super output area (2011) | Strand, St James & Mayfair | E02000977 | 
| Travel to work area | London | E30000234 | 
| Average property price in West London | £788,410 | 
|---|---|
| Annual change | -7.8% |