AL6 9LS is located in the Welwyn West 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 January 2020.


| Easting | 523448 |
| Northing | 216468 |
| Latitude | 51.833198 |
| Longitude | -0.209807 |
| Country | England |
| Postcode District | AL6 |
Elevation or altitude of AL6 9LS as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 70m | 230ft |
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 | Welwyn West |
|---|---|
| Constituency | Welwyn Hatfield |
37, CHURCH STREET, WELWYN, AL6 9LS 2019 3 MAY £1,104,986 |
| Carleton Rise (Church Street) | Welwyn | 82m |
| Church Place (Church Street) | Welwyn | 144m |
| Church Place (Church Street) | Welwyn | 180m |
| St Mary's Church (Church Street) | Welwyn | 369m |
| St Mary's Church (Church Street) | Welwyn | 384m |
| Welwyn North Station | 1.6km |
| Welwyn Garden City Station | 3.6km |
| Knebworth Station | 4.1km |

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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Church Street | 17:00 | 12:00 | 299m |
| Welwyn P.o | 17:00 | 12:00 | 480m |
| Carleton Rise | 17:00 | 12:00 | 485m |
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 AL6 9LS:
| 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 AL6 9LS:
| Code | Name | |
|---|---|---|
| OA | E00121713 | |
| LSOA | E01023968 | Welwyn Hatfield 002B |
| MSOA | E02004981 | Welwyn Hatfield 002 |
| AL6 9FR | Clock House Gardens | 69m |
| AL6 9FT | Clock House Gardens | 73m |
| AL6 9FS | Clock House Gardens | 115m |
| AL6 9NX | Dicket Mead | 129m |
| AL6 9FQ | Clock House Gardens | 131m |
| AL6 9LT | Wendover Drive | 134m |
| AL6 9RA | Carleton Rise | 148m |
| AL6 9LR | Wendover Lodge | 154m |
| AL6 9FP | Clock House Gardens | 156m |
| AL6 9FB | Church Place | 184m |