| Postcode | AL5 3AG | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (2 km) | 
| Bus stops | 
                       Ridgewood Drive (NW) 
Park Rise Close (SW) 
Ridgewood Drive (SE) 
Roundwood Park School (NW) 
Roundwood Lane (NW) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 20 View | 
| Known addresses | 
                       31 Roundwood Park, Harpenden 
                            31A Roundwood Park, Harpenden 
                            33 Roundwood Park, Harpenden 
                            35 Roundwood Park, Harpenden 
                            35A Roundwood Park, Harpenden 
                            37 Roundwood Park, Harpenden 
                            37A Roundwood Park, Harpenden 
                            39 Roundwood Park, Harpenden 
                            41 Roundwood Park, Harpenden 
                            43 Roundwood Park, Harpenden 
                            45 Roundwood Park, Harpenden 
                            47 Roundwood Park, Harpenden 
                            51 Roundwood Park, Harpenden 
                            51A Roundwood Park, Harpenden 
                            53 Roundwood Park, Harpenden 
                       | 
                  
| Main property type | Detached | 
| Businesses | 
                     
                        No businesses found
                     
                   | 
                
| Latitude | 51.823628 | |
|---|---|---|
| Longitude | -0.374316 | |
| Easting | 512139 | |
| Northing | 215139 | |
| Grid reference | TL121151 | |
| UTM reference | 30U 680947 5744682 | |
| what3words | member.vows.silk | |
| FixPhrase | crisped magician shield unscathed | |
| Plus code | 9C3XRJFG+F7 | |
| Altitude | 135 metres (444 feet) | |
| Sunrise (today) | 7:02 | |
| Sunset (today) | 16:30 | |
| Distance away | ||
| Distance to sea | 67.2 KMs (41.7 miles) | 
| Parish | Harpenden Town | E04013284 | 
|---|---|---|
| Ward | Harpenden North & Rural | E05013953 | 
| 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) | 65 | |
|---|---|---|
| Households (2011) | 16 | |
| 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) | E00120311 | |
| Census output area (2011) | 6A1 | |
| Lower layer super output area (2021) | St Albans 001B | E01023691 | 
| Lower layer super output area (2011) | St Albans 001B | E01023691 | 
| Middle layer super output area (2021) | Harpenden North | E02004924 | 
| Middle layer super output area (2011) | Harpenden North | E02004924 | 
| Travel to work area | Luton | E30000237 | 
| Average property price in St Albans | £544,917 | 
|---|---|
| Annual change | 0.0% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 31 Roundwood Park, Harpenden | Detached (freehold) | Nov 2019 | £1,235,000 | 
| 33 Roundwood Park, Harpenden | Detached (freehold) | Jul 2019 | £1,605,000 | 
| Detached (freehold) | Mar 2012 | £1,200,000 | |
| Detached (freehold) | Apr 1997 | £345,000 | |
| 47 Roundwood Park, Harpenden | Detached (freehold) | Oct 2016 | £1,100,000 | 
| Detached (freehold) | Jul 1995 | £190,000 | |
| 51 Roundwood Park, Harpenden | Detached (freehold) | Nov 2015 | £1,775,000 | 
| 51A Roundwood Park, Harpenden | New build detached (freehold) | Aug 2015 | £1,675,000 | 
| 43 Roundwood Park, Harpenden | Detached (freehold) | Jun 2012 | £1,500,000 | 
| Detached (freehold) | Jan 2005 | £636,000 | |
| 35A Roundwood Park, Harpenden | Detached (freehold) | May 2009 | £1,100,000 | 
| Detached (freehold) | Jun 2007 | £1,100,000 | |
| Detached (freehold) | Sep 1996 | £285,000 | |
| 35 Roundwood Park, Harpenden | New build detached (freehold) | May 2008 | £1,400,000 | 
| 45 Roundwood Park, Harpenden | Detached (freehold) | Oct 2007 | £499,999 | 
| 37 Roundwood Park, Harpenden | Detached (freehold) | Apr 2007 | £1,200,000 | 
| Detached (freehold) | Nov 2005 | £1,000,000 |