| Postcode | AL5 2QX | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (1 km) | 
| Bus stops | 
                       Old Rectory Close (NW) 
Old Rectory Close (SE) 
Church Green Terminus (NE) 
Douglas Road (NW) 
Old Cock Inn (N) 
Old Cock Inn (S) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 4 View | 
| Known addresses | 
                       18 Kirkwick Avenue, Harpenden 
                            18A Kirkwick Avenue, Harpenden 
                            22 Kirkwick Avenue, Harpenden 
                       | 
                  
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.815965 | |
|---|---|---|
| Longitude | -0.363218 | |
| Easting | 512923 | |
| Northing | 214304 | |
| Grid reference | TL129143 | |
| UTM reference | 30U 681742 5743857 | |
| what3words | vibrate.frames.sudden | |
| FixPhrase | crisped magician sensuous tapered | |
| Plus code | 9C3XRJ8P+9P | |
| Altitude | 127 metres (415 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 West | E05013955 | 
| Local Authority District | St Albans | E07000240 | 
| County Electoral Division | Harpenden South West | E58000626 | 
| 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) | 8 | |
|---|---|---|
| Households (2011) | 4 | |
| 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) | E00120349 | |
| Census output area (2011) | 6A4 | |
| Lower layer super output area (2021) | St Albans 003B | E01023700 | 
| Lower layer super output area (2011) | St Albans 003B | E01023700 | 
| Middle layer super output area (2021) | Harpenden Town | E02004926 | 
| Middle layer super output area (2011) | Harpenden Town | E02004926 | 
| Travel to work area | Luton | E30000237 | 
| Average property price in St Albans | £544,917 | 
|---|---|
| Annual change | 0.0% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 18 Kirkwick Avenue, Harpenden | Detached (freehold) | Oct 2023 | £3,175,000 | 
| Detached (freehold) | Jul 2003 | £1,180,000 | |
| Detached (freehold) | Dec 1996 | £440,000 | |
| 18A Kirkwick Avenue, Harpenden | Detached (freehold) | Aug 2019 | £1,437,500 | 
| Detached (freehold) | Sep 1996 | £337,250 | |
| 22 Kirkwick Avenue, Harpenden | Detached (freehold) | Jul 2011 | £1,100,000 |