| Postcode | AL6 9GA | 
|---|---|
| Post Town | Welwyn | 
| Nearest station | Welwyn North (2 km) | 
| Bus stops | No nearby bus stops | 
| Roads in this postcode | |
| Number of UPRNs | 11 View | 
| Known addresses | 1 Porteous Court, Welwyn 2 Porteous Court, Welwyn 3 Porteous Court, Welwyn 4 Porteous Court, Welwyn | 
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 51.818878 | |
|---|---|---|
| Longitude | -0.223738 | |
| Easting | 522529 | |
| Northing | 214853 | |
| Grid reference | TL225148 | |
| UTM reference | 30U 691342 5744538 | |
| what3words | prone.plans.indoor | |
| FixPhrase | crisped magma seventeen waffle | |
| Plus code | 9C3XRQ9G+HG | |
| Altitude | 87 metres (285 feet) | |
| Sunrise (today) | 6:54 | |
| Sunset (today) | 16:36 | |
| Distance away | ||
| Distance to sea | 58.3 KMs (36.2 miles) | 
| Parish | Welwyn | E04004822 | 
|---|---|---|
| Ward | Welwyn West | E05011073 | 
| Local Authority District | Welwyn Hatfield | E07000241 | 
| County Electoral Division | Welwyn | E58000675 | 
| Local Authority | Hertfordshire | E10000015 | 
| County | Hertfordshire | E10000015 | 
| Constituency (2024) | Welwyn Hatfield | E14001573 | 
| MP | Andrew Lewin | Labour | 
| Police force | Hertfordshire | |
| Water company | Affinity Water | |
| Sewage company | Thames Water | |
| NUTS/ITL 3 | North and East Hertfordshire | |
| NUTS/ITL 2 | Bedfordshire and Hertfordshire | |
| NUTS/ITL 1 | East of England | |
| Country | England | E92000001 | 
| Date introduced | August 2015 | 
|---|---|
| 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 | 
| 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 | |
| Census output area (2021) | E00190241 | |
| Census output area (2011) | 4A1 | |
| Lower layer super output area (2021) | Welwyn Hatfield 002D | E01023970 | 
| Lower layer super output area (2011) | Welwyn Hatfield 002D | E01023970 | 
| Middle layer super output area (2021) | Welwyn & Hatfield Garden Village | E02004981 | 
| Middle layer super output area (2011) | Welwyn & Hatfield Garden Village | E02004981 | 
| Travel to work area | Stevenage and Welwyn Garden City | E30000272 | 
| Average property price in St Albans | £541,094 | 
|---|---|
| Annual change | -0.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 1 Porteous Court, Welwyn | New build semi-detached (freehold) | May 2018 | £875,000 | 
| 4 Porteous Court, Welwyn | New build semi-detached (freehold) | Mar 2018 | £645,000 | 
| 3 Porteous Court, Welwyn | New build semi-detached (freehold) | Feb 2018 | £600,000 | 
| 2 Porteous Court, Welwyn | New build semi-detached (freehold) | Dec 2017 | £899,950 |