| Postcode | AL5 5ST | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (1 km) | 
| Bus stops | Topstreet Way (E) Topstreet Way (W) Highfield Avenue (E) Tylers (SE) Gilpin Green (SW) Barnfield Road (NE) | 
| Roads in this postcode | |
| Number of UPRNs | 59 View | 
| Known addresses | 1 Chesterton Avenue, Harpenden 2 Chesterton Avenue, Harpenden 3 Chesterton Avenue, Harpenden 5 Chesterton Avenue, Harpenden 6 Chesterton Avenue, Harpenden 7 Chesterton Avenue, Harpenden 8 Chesterton Avenue, Harpenden 10 Chesterton Avenue, Harpenden 11 Chesterton Avenue, Harpenden 12 Chesterton Avenue, Harpenden 12A Chesterton Avenue, Harpenden 15 Chesterton Avenue, Harpenden 16 Chesterton Avenue, Harpenden 17 Chesterton Avenue, Harpenden 19 Chesterton Avenue, Harpenden 20 Chesterton Avenue, Harpenden 21 Chesterton Avenue, Harpenden 22 Chesterton Avenue, Harpenden 25 Chesterton Avenue, Harpenden 26 Chesterton Avenue, Harpenden 27 Chesterton Avenue, Harpenden 29 Chesterton Avenue, Harpenden 30 Chesterton Avenue, Harpenden 31 Chesterton Avenue, Harpenden 32 Chesterton Avenue, Harpenden 34 Chesterton Avenue, Harpenden 35 Chesterton Avenue, Harpenden 36 Chesterton Avenue, Harpenden 37 Chesterton Avenue, Harpenden 38 Chesterton Avenue, Harpenden 78 Chesterton Avenue, Harpenden 79 Chesterton Avenue, Harpenden 80 Chesterton Avenue, Harpenden 81 Chesterton Avenue, Harpenden 83 Chesterton Avenue, Harpenden 84 Chesterton Avenue, Harpenden 85 Chesterton Avenue, Harpenden 86 Chesterton Avenue, Harpenden 88 Chesterton Avenue, Harpenden 90 Chesterton Avenue, Harpenden 92 Chesterton Avenue, Harpenden | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.813524 | |
|---|---|---|
| Longitude | -0.340414 | |
| Easting | 514501 | |
| Northing | 214068 | |
| Grid reference | TL145140 | |
| UTM reference | 30U 683324 5743643 | |
| what3words | asserts.fairly.impose | |
| FixPhrase | crisped magician seduce unmolded | |
| Plus code | 9C3XRM75+CR | |
| Altitude | 128 metres (419 feet) | |
| Sunrise (today) | 6:55 | |
| Sunset (today) | 16:37 | |
| Distance away | ||
| Distance to sea | 64.6 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) | 163 | |
|---|---|---|
| Households (2011) | 59 | |
| 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) | E00120292 | |
| Census output area (2011) | 6A2 | |
| 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 | 
|---|---|---|---|
| 80 Chesterton Avenue, Harpenden | Semi-detached (freehold) | May 2025 | £710,000 | 
| Semi-detached (freehold) | Nov 2015 | £515,000 | |
| Semi-detached (freehold) | Aug 1995 | £97,000 | |
| 26 Chesterton Avenue, Harpenden | Semi-detached (freehold) | Apr 2024 | £871,500 | 
| Semi-detached (freehold) | Jan 2016 | £650,000 | |
| 11 Chesterton Avenue, Harpenden | Detached (freehold) | Apr 2024 | £851,137 | 
| 10 Chesterton Avenue, Harpenden | Semi-detached (freehold) | Aug 2023 | £700,000 | 
| Semi-detached (freehold) | Aug 2014 | £465,000 | |
| Semi-detached (freehold) | Dec 2000 | £215,000 | |
| 8 Chesterton Avenue, Harpenden | Detached (freehold) | May 2023 | £757,500 | 
| Detached (freehold) | Dec 2009 | £475,000 | |
| Detached (freehold) | Dec 1995 | £135,000 | |
| 5 Chesterton Avenue, Harpenden | Semi-detached (freehold) | Jan 2023 | £732,500 | 
| Semi-detached (freehold) | Jul 2019 | £575,000 | |
| Semi-detached (freehold) | Feb 2016 | £540,000 | |
| Semi-detached (freehold) | Sep 2011 | £426,000 | |
| Semi-detached (freehold) | Dec 2005 | £320,000 | |
| Semi-detached (freehold) | Oct 1998 | £128,000 | |
| Semi-detached (freehold) | Jul 1997 | £117,000 | |
| 6 Chesterton Avenue, Harpenden | Semi-detached (freehold) | Nov 2022 | £725,000 | 
| 27 Chesterton Avenue, Harpenden | Semi-detached (freehold) | Jul 2021 | £550,000 | 
| 79 Chesterton Avenue, Harpenden | Semi-detached (freehold) | Jan 2021 | £585,000 | 
| Semi-detached (freehold) | Nov 2015 | £515,000 | |
| Semi-detached (freehold) | Oct 2012 | £407,000 | |
| Semi-detached (freehold) | Feb 2008 | £362,500 | |
| 7 Chesterton Avenue, Harpenden | Semi-detached (freehold) | Nov 2019 | £553,000 | 
| Semi-detached (freehold) | Oct 2014 | £490,000 |