| Postcode | AL5 5SN | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (1 km) | 
| Bus stops | Tylers (SE) Ashwell Park (SW) Highfield Avenue (E) Topstreet Way (E) Topstreet Way (W) Barnfield Road (NE) | 
| Roads in this postcode | |
| Number of UPRNs | 30 View | 
| Known addresses | 2 Thornbury, Harpenden 6 Thornbury, Harpenden 7 Thornbury, Harpenden 8 Thornbury, Harpenden 12 Thornbury, Harpenden 13 Thornbury, Harpenden 18 Thornbury, Harpenden 19 Thornbury, Harpenden 20 Thornbury, Harpenden 21 Thornbury, Harpenden 22 Thornbury, Harpenden 23 Thornbury, Harpenden 24 Thornbury, Harpenden 26 Thornbury, Harpenden 27 Thornbury, Harpenden 31 Thornbury, Harpenden | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.814728 | |
|---|---|---|
| Longitude | -0.33844 | |
| Easting | 514634 | |
| Northing | 214205 | |
| Grid reference | TL146142 | |
| UTM reference | 30U 683455 5743782 | |
| what3words | festivity.gone.normal | |
| FixPhrase | crisped magician seltzer until | |
| Plus code | 9C3XRM76+VJ | |
| Altitude | 124 metres (407 feet) | |
| Sunrise (today) | 6:55 | |
| Sunset (today) | 16:37 | |
| Distance away | ||
| Distance to sea | 64.5 KMs (40.1 miles) | 
| Parish | Harpenden Town | E04013284 | 
|---|---|---|
| Ward | Harpenden East | E05013952 | 
| Local Authority District | St Albans | E07000240 | 
| County Electoral Division | Harpenden North East | E58000624 | 
| Local Authority | Hertfordshire | E10000015 | 
| County | Hertfordshire | E10000015 | 
| Constituency (2024) | Harpenden and Berkhamsted | E14001268 | 
| MP | Victoria Collins | Liberal Democrat | 
| Police force | Hertfordshire | |
| Water company | Affinity Water | |
| Sewage company | Thames Water | |
| NUTS/ITL 3 | South West Hertfordshire | |
| NUTS/ITL 2 | Bedfordshire and Hertfordshire | |
| NUTS/ITL 1 | East of England | |
| 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) | 75 | |
|---|---|---|
| Households (2011) | 30 | |
| 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 city and town | |
| Built up area (2024) | Harpenden | E63011425 | 
| Census output area (2021) | E00120287 | |
| Census output area (2011) | 6A1 | |
| Lower layer super output area (2021) | St Albans 002B | E01023686 | 
| Lower layer super output area (2011) | St Albans 002B | E01023686 | 
| Middle layer super output area (2021) | Harpenden East | E02004925 | 
| Middle layer super output area (2011) | Harpenden East | E02004925 | 
| Travel to work area | Luton | E30000237 | 
| Average property price in St Albans | £541,094 | 
|---|---|
| Annual change | -0.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 6 Thornbury, Harpenden | Detached (freehold) | May 2022 | £955,000 | 
| 12 Thornbury, Harpenden | Semi-detached (freehold) | Feb 2021 | £777,500 | 
| 21 Thornbury, Harpenden | Detached (freehold) | Feb 2021 | £800,000 | 
| 31 Thornbury, Harpenden | Detached (freehold) | Nov 2018 | £726,957 | 
| 24 Thornbury, Harpenden | Terraced (freehold) | Feb 2018 | £470,000 | 
| Terraced (freehold) | Jan 2006 | £275,000 | |
| Terraced (freehold) | Aug 2003 | £220,000 | |
| Terraced (freehold) | Apr 1999 | £124,000 | |
| Terraced (freehold) | Oct 1995 | £86,000 | |
| 13 Thornbury, Harpenden | Detached (freehold) | Jul 2017 | £800,000 | 
| Detached (freehold) | Aug 2011 | £560,000 | |
| Detached (freehold) | Apr 2002 | £308,500 | |
| New build detached (freehold) | Dec 1998 | £220,000 | |
| 20 Thornbury, Harpenden | Terraced (freehold) | Aug 2016 | £485,000 | 
| Terraced (freehold) | Feb 2014 | £390,050 | |
| 26 Thornbury, Harpenden | Terraced (freehold) | Mar 2013 | £370,000 | 
| Terraced (freehold) | Feb 2007 | £276,500 | |
| 2 Thornbury, Harpenden | Detached (freehold) | Jan 2011 | £520,000 | 
| 7 Thornbury, Harpenden | Detached (freehold) | Jul 2010 | £535,000 |