HP21 9GX is located in the Wendover, Halton and Stoke Mandeville electoral ward, within the unitary authority of Buckinghamshire and the English Parliamentary constituency of Aylesbury. The Sub Integrated Care Board (ICB) Location is NHS Buckinghamshire, Oxfordshire and Berkshire West ICB - 14Y and the police force is Thames Valley. This postcode has been in use since November 2019.


| Easting | 482701 |
| Northing | 211527 |
| Latitude | 51.796295 |
| Longitude | -0.802164 |
| Country | England |
| Postcode District | HP21 |
| Ward | Wendover, Halton And Stoke Mandeville |
|---|---|
| Constituency | Aylesbury |
4, SYDNEY STREET, AYLESBURY, HP21 9GX 2020 28 FEB £409,950 |
1, SYDNEY STREET, AYLESBURY, HP21 9GX 2020 3 FEB £440,000 |
| Ambulance Station Roundabout (Service Road) | Aylesbury | 86m |
| Stoke Mandeville Hospital Out Patients (Service Road) | Aylesbury | 108m |
| Stoke Mandeville Hospital Out Patients (Service Road) | Aylesbury | 111m |
| Ambulance Station (Mandeville Road) | Aylesbury | 140m |
| Ambulance Station (Mandeville Road) | Aylesbury | 154m |
| Stoke Mandeville Station | 1.6km |
| Aylesbury Station | 2.2km |
| Little Kimble Station | 4.9km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Kynaston Ave | 17:15 | 12:00 | 282m |
| Manderville Road | 17:15 | 12:00 | 583m |
| Mellstock Road | 17:15 | 12:00 | 722m |
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for HP21 9GX:
| ITL 1 Code | Name |
|---|---|
| TLJ | South East (England) |
| ITL 2 Code | Name |
| TLJ1 | Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 Code | Name |
| TLJ13 | Buckinghamshire |
| LAU 1 Code | Name |
| E06000060 | Buckinghamshire |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for HP21 9GX:
| Code | Name | |
|---|---|---|
| OA | E00088990 | |
| LSOA | E01017631 | Aylesbury Vale 021E |
| MSOA | E02003672 | Aylesbury Vale 021 |
| HP21 9DZ | Bradenham Walk | 218m |
| HP21 9DT | Roblin Close | 270m |
| HP21 9DR | Lower Road | 328m |
| HP21 9FN | Gwendoline Buck Drive | 339m |
| HP21 9EZ | Scaldwell Place | 364m |
| HP21 9DS | Kynaston Avenue | 365m |
| HP21 9BE | Mandeville Mews | 372m |
| HP21 9BD | Winterton Drive | 384m |
| HP21 9EY | Loosley Green | 396m |
| HP21 9FG | Poole Close | 408m |