AL9 5DA is located in the Hatfield East electoral ward, within the local authority district of Welwyn Hatfield and the English Parliamentary constituency of Welwyn Hatfield. The Sub Integrated Care Board (ICB) Location is NHS Hertfordshire and West Essex ICB - 06K and the police force is Hertfordshire. This postcode has been in use since June 1981.


| Easting | 523239 |
| Northing | 209241 |
| Latitude | 51.768296 |
| Longitude | -0.215405 |
| Country | England |
| Postcode District | AL9 |
Elevation or altitude of AL9 5DA as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 80m | 262ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
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| Ward | Hatfield East |
|---|---|
| Constituency | Welwyn Hatfield |
87, GREAT NORTH ROAD, HATFIELD, AL9 5DA 2016 29 JUL £2,400,000 |
| The Ryde (Hertford Road) | Hatfield | 115m |
| Fawn Court (The Ryde) | Hatfield | 146m |
| Cecil Crescent (St Albans Road East) | Hatfield | 185m |
| Cecil Crescent (St Albans Road East) | Hatfield | 200m |
| Fawn Court (The Ryde) | Hatfield | 256m |
| Hatfield (Herts) Station | 0.5km |
| Welham Green Station | 3.6km |
| Welwyn Garden City Station | 3.7km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Cecil Crescent | 18:30 | 12:00 | 185m |
| The Ryde | 17:00 | 12:00 | 343m |
| Park Meadow | 17:00 | 12:00 | 354m |
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for AL9 5DA:
| ITL 1 Code | Name |
|---|---|
| TLH | East |
| ITL 2 Code | Name |
| TLH2 | Bedfordshire and Hertfordshire |
| ITL 3 Code | Name |
| TLH23 | Hertfordshire CC |
| LAU 1 Code | Name |
| E07000241 | Welwyn Hatfield |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for AL9 5DA:
| Code | Name | |
|---|---|---|
| OA | E00121495 | |
| LSOA | E01023926 | Welwyn Hatfield 011C |
| MSOA | E02004990 | Welwyn Hatfield 011 |
| AL9 5EG | North Drive | 61m |
| AL9 5DB | Great North Road | 89m |
| AL9 5ED | Burleigh Mead | 92m |
| AL9 5DF | Great North Road | 114m |
| AL9 5BW | Great North Road | 131m |
| AL10 0HE | St Albans Road East | 143m |
| AL10 0AT | Heyford Way | 151m |
| AL9 5EX | Old Hertford Road | 180m |
| AL10 0TW | Branch Close | 192m |
| AL9 5DE | Bull Stag Green | 193m |