| Postcode | AL5 4HN | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (1 km) | 
| Bus stops | 
                       Dell Close (NE) 
Dell Close (SW) 
Ox Lane (S) 
Ox Lane (N) 
St Georges School (S) 
Masefield Road (NE) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 15 View | 
| Known addresses | 
                       1 Westfield Avenue, Harpenden 
                            1A Westfield Avenue, Harpenden 
                            2A Westfield Avenue, Harpenden 
                            3 Westfield Avenue, Harpenden 
                            4 Westfield Avenue, Harpenden 
                            6 Westfield Avenue, Harpenden 
                            7 Westfield Avenue, Harpenden 
                            10 Westfield Avenue, Harpenden 
                            12 Westfield Avenue, Harpenden 
                       | 
                  
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.824959 | |
|---|---|---|
| Longitude | -0.354272 | |
| Easting | 513517 | |
| Northing | 215318 | |
| Grid reference | TL135153 | |
| UTM reference | 30U 682322 5744880 | |
| what3words | gasp.taps.bucks | |
| FixPhrase | crisped magician shore talon | |
| Plus code | 9C3XRJFW+X7 | |
| Altitude | 122 metres (399 feet) | |
| Sunrise (today) | 7:02 | |
| Sunset (today) | 16:30 | |
| Distance away | ||
| Distance to sea | 66.1 KMs (41.1 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) | 37 | |
|---|---|---|
| Households (2011) | 12 | |
| 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) | E00120314 | |
| Census output area (2011) | 5B2 | |
| Lower layer super output area (2021) | St Albans 001C | E01023692 | 
| Lower layer super output area (2011) | St Albans 001C | E01023692 | 
| 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 | 
|---|---|---|---|
| 12 Westfield Avenue, Harpenden | Detached (freehold) | Sep 2022 | £1,520,000 | 
| New build detached (freehold) | Nov 2008 | £650,000 | |
| 2A Westfield Avenue, Harpenden | Detached (freehold) | Sep 2016 | £1,500,000 | 
| 6 Westfield Avenue, Harpenden | Detached (freehold) | Dec 2013 | £1,075,000 | 
| Detached (freehold) | Aug 1998 | £250,000 | |
| 7 Westfield Avenue, Harpenden | Detached (freehold) | May 2013 | £790,000 | 
| Detached (freehold) | Dec 1997 | £260,000 | |
| 1 Westfield Avenue, Harpenden | Detached (freehold) | Nov 2004 | £692,500 | 
| Detached (freehold) | Mar 2000 | £372,500 | |
| 1A Westfield Avenue, Harpenden | Detached (freehold) | May 2003 | £405,000 | 
| Detached (freehold) | Apr 1995 | £142,500 | |
| 4 Westfield Avenue, Harpenden | Detached (freehold) | Feb 2002 | £479,000 | 
| 10 Westfield Avenue, Harpenden | Semi-detached (freehold) | Mar 2000 | £250,000 | 
| Semi-detached (freehold) | Apr 1997 | £187,500 | |
| 3 Westfield Avenue, Harpenden | Detached (freehold) | Jun 1998 | £319,200 | 
| Detached (freehold) | Aug 1995 | £195,900 |