| Postcode | AL5 5NJ | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (0 km) | 
| Bus stops | 
                       Spenser Road (NW) 
Spenser Road (SE) 
The Cedars (NW) 
Gilpin Green (SW) 
Overstone Road (SW) 
Overstone Road (NE) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 15 View | 
| Known addresses | 
                       41 Cowper Road, Harpenden 
                            43 Cowper Road, Harpenden 
                            45 Cowper Road, Harpenden 
                            47 Cowper Road, Harpenden 
                            49 Cowper Road, Harpenden 
                            57 Cowper Road, Harpenden 
                            57A Cowper Road, Harpenden 
                            59 Cowper Road, Harpenden 
                            61 Cowper Road, Harpenden 
                            63 Cowper Road, Harpenden 
                            65 Cowper Road, Harpenden 
                            67 Cowper Road, Harpenden 
                            69 Cowper Road, Harpenden 
                       | 
                  
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 51.814697 | |
|---|---|---|
| Longitude | -0.346478 | |
| Easting | 514080 | |
| Northing | 214189 | |
| Grid reference | TL140141 | |
| UTM reference | 30U 682901 5743758 | |
| what3words | fade.grow.flames | |
| FixPhrase | crisped magician self unusual | |
| Plus code | 9C3XRM73+VC | |
| Altitude | 128 metres (419 feet) | |
| Sunrise (today) | 7:02 | |
| Sunset (today) | 16:30 | |
| Distance away | ||
| Distance to sea | 65 KMs (40.4 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) | 41 | |
|---|---|---|
| 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) | E00120356 | |
| Census output area (2011) | 5B1 | |
| Lower layer super output area (2021) | St Albans 003D | E01023702 | 
| Lower layer super output area (2011) | St Albans 003D | E01023702 | 
| 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 | 
|---|---|---|---|
| 45 Cowper Road, Harpenden | Semi-detached (freehold) | Jul 2024 | £985,000 | 
| Semi-detached (freehold) | Nov 2018 | £800,000 | |
| Semi-detached (freehold) | Mar 2010 | £595,000 | |
| Semi-detached (freehold) | Nov 2001 | £186,000 | |
| 43 Cowper Road, Harpenden | Semi-detached (freehold) | Jun 2023 | £940,000 | 
| Semi-detached (freehold) | Jan 2011 | £500,000 | |
| Semi-detached (freehold) | Oct 2003 | £439,500 | |
| Semi-detached (freehold) | Mar 1998 | £177,500 | |
| 49 Cowper Road, Harpenden | Terraced (freehold) | Aug 2022 | £965,500 | 
| Terraced (freehold) | Jul 1999 | £250,000 | |
| 47 Cowper Road, Harpenden | Semi-detached (freehold) | Dec 2019 | £830,000 | 
| Semi-detached (freehold) | Apr 2004 | £485,000 | |
| Semi-detached (freehold) | Sep 2003 | £439,500 | |
| Semi-detached (freehold) | Nov 2000 | £322,500 | |
| Semi-detached (freehold) | Feb 2000 | £160,000 | |
| 41 Cowper Road, Harpenden | Detached (freehold) | Sep 2017 | £1,120,000 | 
| Detached (freehold) | Sep 2010 | £887,088 | |
| Detached (freehold) | Apr 2004 | £590,000 | |
| Detached (freehold) | Mar 2000 | £416,000 | |
| Detached (freehold) | Aug 1998 | £190,000 | |
| 57 Cowper Road, Harpenden | Semi-detached (freehold) | May 2017 | £785,000 | 
| 59 Cowper Road, Harpenden | Semi-detached (freehold) | Sep 2015 | £535,000 | 
| 65 Cowper Road, Harpenden | Semi-detached (freehold) | Nov 2014 | £650,000 | 
| 69 Cowper Road, Harpenden | Semi-detached (freehold) | May 2012 | £432,500 | 
| Semi-detached (freehold) | Apr 1999 | £148,000 | |
| 67 Cowper Road, Harpenden | Semi-detached (freehold) | Jun 2007 | £372,500 |