| Postcode | HP18 0XH | 
|---|---|
| Post Town | Aylesbury | 
| Nearest station | Bicester Village (9 km) | 
| Bus stops | Rumptons Paddock (SE) Combined School (NW) Combined School (SE) | 
| Roads in this postcode | |
| Number of UPRNs | 3 View | 
| Known addresses | 1 Midsummer Drive, Grendon Underwood 2 Midsummer Drive, Grendon Underwood 3 Midsummer Drive, Grendon Underwood | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.881794 | |
|---|---|---|
| Longitude | -1.016545 | |
| Easting | 467790 | |
| Northing | 220816 | |
| Grid reference | SP677208 | |
| UTM reference | 30U 636517 5749750 | |
| what3words | worms.lasted.thigh | |
| FixPhrase | crisped mace strife vaguely | |
| Plus code | 9C3WVXJM+P9 | |
| Altitude | 73 metres (240 feet) | |
| Sunrise (today) | 6:57 | |
| Sunset (today) | 16:39 | |
| Distance away | ||
| Distance to sea | 109.2 KMs (67.9 miles) | 
| Parish | Grendon Underwood | E04001489 | 
|---|---|---|
| Ward | Grendon Underwood & The Claydons | E05015953 | 
| Unitary Authority | Buckinghamshire | E06000060 | 
| County | Buckinghamshire | E10000002 | 
| Constituency (2024) | Mid Buckinghamshire | E14001360 | 
| MP | Greg Smith | Conservative | 
| Police force | Thames Valley | |
| Water company | Thames Water | |
| NUTS/ITL 3 | Buckinghamshire | |
| NUTS/ITL 2 | Berkshire, Buckinghamshire and Oxfordshire | |
| NUTS/ITL 1 | South East | |
| Country | England | E92000001 | 
| Date introduced | June 1997 | 
|---|---|
| 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) | 9 | |
|---|---|---|
| Households (2011) | 3 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Smaller rural: Nearer to a major town or city | |
| Rural/urban (2011) | Rural village | |
| Built up area (2024) | Grendon Underwood | E63011317 | 
| Census output area (2021) | E00089207 | |
| Census output area (2011) | 1B3 | |
| Lower layer super output area (2021) | Buckinghamshire 010C | E01017673 | 
| Lower layer super output area (2011) | Aylesbury Vale 010C | E01017673 | 
| Middle layer super output area (2021) | Oakley, Brill & Edgcott | E02003661 | 
| Middle layer super output area (2011) | Oakley, Brill & Edgcott | E02003661 | 
| Travel to work area | Oxford | E30000250 | 
| Average property price in Hemel Hempstead | £445,841 | 
|---|---|
| Annual change | -1.0% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 3 Midsummer Drive, Grendon Underwood | Detached (freehold) | Jun 2021 | £640,000 | 
| New build detached (freehold) | Aug 1997 | £189,950 | |
| 1 Midsummer Drive, Grendon Underwood | Detached (freehold) | Sep 2016 | £720,000 | 
| New build detached (freehold) | May 1997 | £235,000 | |
| 2 Midsummer Drive, Grendon Underwood | Detached (freehold) | Nov 2014 | £580,000 | 
| Detached (freehold) | Oct 2000 | £310,000 | |
| Detached (freehold) | Aug 1997 | £199,950 |