| Postcode | AL5 5PS | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (1 km) | 
| Bus stops | Lyndhurst Drive (NE) Tylers (SE) Langdale Avenue (NE) Chesterton Avenue (NW) Langdale Avenue (S) Gilpin Green (SW) | 
| Roads in this postcode | |
| Number of UPRNs | 15 View | 
| Known addresses | 2 Grasmere Avenue, Harpenden 4 Grasmere Avenue, Harpenden 6 Grasmere Avenue, Harpenden 10 Grasmere Avenue, Harpenden 12 Grasmere Avenue, Harpenden 14 Grasmere Avenue, Harpenden 16 Grasmere Avenue, Harpenden 18 Grasmere Avenue, Harpenden 24 Grasmere Avenue, Harpenden 26 Grasmere Avenue, Harpenden 28 Grasmere Avenue, Harpenden 32 Grasmere Avenue, Harpenden | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.817139 | |
|---|---|---|
| Longitude | -0.342341 | |
| Easting | 514359 | |
| Northing | 214467 | |
| Grid reference | TL143144 | |
| UTM reference | 30U 683176 5744040 | |
| what3words | deed.locate.notion | |
| FixPhrase | crisped magician serrated tinfoil | |
| Plus code | 9C3XRM85+V3 | |
| Altitude | 122 metres (402 feet) | |
| Sunrise (today) | 6:55 | |
| Sunset (today) | 16:37 | |
| Distance away | ||
| Distance to sea | 64.9 KMs (40.3 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) | 40 | |
|---|---|---|
| Households (2011) | 15 | |
| 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 | 
|---|---|---|---|
| 10 Grasmere Avenue, Harpenden | Detached (freehold) | May 2024 | £2,000,000 | 
| 32 Grasmere Avenue, Harpenden | Detached (freehold) | Aug 2023 | £2,025,000 | 
| Detached (freehold) | Jun 2010 | £1,400,000 | |
| Detached (freehold) | Oct 2008 | £700,000 | |
| 6 Grasmere Avenue, Harpenden | Other (freehold) | Jun 2023 | £1,295,000 | 
| 2 Grasmere Avenue, Harpenden | Detached (freehold) | Mar 2023 | £1,600,000 | 
| 12 Grasmere Avenue, Harpenden | Detached (freehold) | Nov 2022 | £1,850,000 | 
| Detached (freehold) | Dec 2005 | £1,065,000 | |
| Detached (freehold) | Feb 1998 | £250,000 | |
| 24 Grasmere Avenue, Harpenden | Detached (freehold) | Oct 2022 | £1,975,000 | 
| 28 Grasmere Avenue, Harpenden | Detached (freehold) | Sep 2022 | £1,810,000 | 
| 16 Grasmere Avenue, Harpenden | Detached (freehold) | Jun 2021 | £1,722,000 | 
| Detached (freehold) | May 2012 | £995,000 | |
| 26 Grasmere Avenue, Harpenden | Detached (freehold) | Sep 2014 | £1,325,000 | 
| 18 Grasmere Avenue, Harpenden | Detached (freehold) | Sep 2012 | £1,200,000 | 
| Detached (freehold) | Aug 2007 | £900,000 |