| Postcode | SW1X 8PH | 
|---|---|
| Post Town | London | 
| Nearest station | Hyde Park Corner (0 km) | 
| Bus stops | Hyde Park Corner (E) Hyde Park Corner (N) Pont Street (S) Sloane Street  Knightsbridge Station (S) Pont Street (N) Eaton Square (W) | 
| London travel zone | 1 | 
| Roads in this postcode | |
| Number of UPRNs | 32 View | 
| Known addresses | Fourth Floor Flat, 4 Belgrave Square, London Lower Ground Floor Flat, 4 Belgrave Square, London Maisonette, 4 Belgrave Square, London Second And Third Floor Flat, 4 Belgrave Square, London 9 Belgrave Square, London 10 Belgrave Square, London 11A Belgrave Square, London | 
| Main property type | Flat | 
| Businesses | 
| Latitude | 51.49994 | |
|---|---|---|
| Longitude | -0.15466 | |
| Easting | 528186 | |
| Northing | 179503 | |
| Grid reference | TQ281795 | |
| UTM reference | 30U 697484 5709261 | |
| what3words | name.powder.whites | |
| FixPhrase | cringe magnesium swifter volumes | |
| Plus code | 9C3XFRXW+X4 | |
| Altitude | 16 metres (53 feet) | |
| Sunrise (today) | 6:53 | |
| Sunset (today) | 16:37 | |
| Distance away | ||
| Distance to sea | 39.5 KMs (24.5 miles) | 
| Parish | Westminster, unparished area | E43000236 | 
|---|---|---|
| Ward | Knightsbridge & Belgravia | E05013797 | 
| London Borough | Westminster | E09000033 | 
| County | Greater London | E11000009 | 
| Constituency (2024) | Cities of London and Westminster | E14001172 | 
| MP | Rachel Blake | Labour | 
| Police force | Metropolitan Police | |
| Water company | Thames Water | |
| 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 | 
|---|---|
| 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 | 
| Population (2011) | 21 | |
|---|---|---|
| Households (2011) | 10 | |
| 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) | E00023671 | |
| Census output area (2011) | 2D1 | |
| Lower layer super output area (2021) | Westminster 019E | E01004691 | 
| Lower layer super output area (2011) | Westminster 019E | E01004691 | 
| Middle layer super output area (2021) | Knightsbridge, Belgravia & Hyde Park | E02000978 | 
| Middle layer super output area (2011) | Knightsbridge, Belgravia & Hyde Park | E02000978 | 
| Travel to work area | London | E30000234 | 
| Average property price in South West London | £707,741 | 
|---|---|
| Annual change | -8.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 11A Belgrave Square, London | Other (freehold) | Mar 2021 | £5,000 | 
| 9 Belgrave Square, London | Other (freehold) | Aug 2020 | £42,000,000 | 
| 10 Belgrave Square, London | Other (freehold) | Nov 2018 | £48,000,000 | 
| Lower Ground Floor Flat, 4 Belgrave Square, London | Flat (leasehold) | Feb 2015 | £2,500,000 | 
| Flat (leasehold) | Mar 1995 | £40,000 | |
| Maisonette, 4 Belgrave Square, London | New build flat (leasehold) | Jul 2008 | £2,064,200 | 
| Fourth Floor Flat, 4 Belgrave Square, London | Flat (leasehold) | Jun 2007 | £1,615,000 | 
| Second And Third Floor Flat, 4 Belgrave Square, London | Flat (leasehold) | May 2003 | £1,958,750 |