| Postcode | AL5 3LT | 
|---|---|
| Post Town | Harpenden | 
| Nearest station | Harpenden (2 km) | 
| Bus stops | 
                       Ridgewood Drive (NW) 
Farm Avenue (SE) 
Farm Avenue (NW) 
Park Rise Close (NE) 
Park Rise Close (SW) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 29 View | 
| Known addresses | 
                       15 Ridge Avenue, Harpenden 
                            17 Ridge Avenue, Harpenden 
                            18 Ridge Avenue, Harpenden 
                            19 Ridge Avenue, Harpenden 
                            21 Ridge Avenue, Harpenden 
                            22 Ridge Avenue, Harpenden 
                            23 Ridge Avenue, Harpenden 
                            24 Ridge Avenue, Harpenden 
                            26 Ridge Avenue, Harpenden 
                            28 Ridge Avenue, Harpenden 
                            31 Ridge Avenue, Harpenden 
                            32 Ridge Avenue, Harpenden 
                            33 Ridge Avenue, Harpenden 
                            35 Ridge Avenue, Harpenden 
                            36 Ridge Avenue, Harpenden 
                            37 Ridge Avenue, Harpenden 
                            38 Ridge Avenue, Harpenden 
                            39 Ridge Avenue, Harpenden 
                            40 Ridge Avenue, Harpenden 
                            42 Ridge Avenue, Harpenden 
                            43 Ridge Avenue, Harpenden 
                       | 
                  
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.828166 | |
|---|---|---|
| Longitude | -0.375416 | |
| Easting | 512052 | |
| Northing | 215642 | |
| Grid reference | TL120156 | |
| UTM reference | 30U 680853 5745184 | |
| what3words | pulse.enhancement.fresh | |
| FixPhrase | crisped magician shrank triangle | |
| Plus code | 9C3XRJHF+7R | |
| Altitude | 121 metres (397 feet) | |
| Sunrise (today) | 7:02 | |
| Sunset (today) | 16:30 | |
| Distance away | ||
| Distance to sea | 67.5 KMs (41.9 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) | 65 | |
|---|---|---|
| Households (2011) | 26 | |
| 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) | E00120320 | |
| Census output area (2011) | 5A2 | |
| Lower layer super output area (2021) | St Albans 001B | E01023691 | 
| Lower layer super output area (2011) | St Albans 001B | E01023691 | 
| 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 | 
|---|---|---|---|
| 24 Ridge Avenue, Harpenden | Semi-detached (freehold) | Oct 2024 | £845,000 | 
| Semi-detached (freehold) | Aug 2007 | £490,000 | |
| 21 Ridge Avenue, Harpenden | Semi-detached (freehold) | Nov 2021 | £795,000 | 
| 31 Ridge Avenue, Harpenden | Detached (freehold) | Jun 2021 | £670,000 | 
| 40 Ridge Avenue, Harpenden | Detached (freehold) | Mar 2020 | £730,000 | 
| 26 Ridge Avenue, Harpenden | Semi-detached (freehold) | May 2018 | £710,000 | 
| 32 Ridge Avenue, Harpenden | Detached (freehold) | Sep 2017 | £1,090,000 | 
| 28 Ridge Avenue, Harpenden | Semi-detached (freehold) | Nov 2015 | £600,000 | 
| 18 Ridge Avenue, Harpenden | Semi-detached (freehold) | Jan 2014 | £550,000 | 
| Semi-detached (freehold) | Jul 1997 | £173,000 | |
| 39 Ridge Avenue, Harpenden | Detached (freehold) | Sep 2013 | £840,000 | 
| Detached (freehold) | Jan 2011 | £356,000 | |
| 35 Ridge Avenue, Harpenden | Detached (freehold) | Nov 2012 | £375,000 |