AL4 0HL lies on Hatfield Road in Smallford, St Albans. AL4 0HL is located in the Colney Heath electoral ward, within the local authority district of St Albans and the English Parliamentary constituency of St Albans. The Sub Integrated Care Board (ICB) Location is NHS Hertfordshire and West Essex ICB - 06N and the police force is Hertfordshire. This postcode has been in use since January 1980.


| Easting | 519481 |
| Northing | 207684 |
| Latitude | 51.755112 |
| Longitude | -0.270397 |
| Street | Hatfield Road |
| Locality | Smallford |
| Town/City | St Albans |
| Country | England |
| Postcode District | AL4 |
Elevation or altitude of AL4 0HL 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 | Colney Heath |
|---|---|
| Constituency | St Albans |
601, HATFIELD ROAD, SMALLFORD, ST ALBANS, AL4 0HL 2011 10 MAR £750,000 |
| Smallford Roundabout (Hatfield Road) | Smallford | 56m |
| Three Horseshoes Ph (Hatfield Road) | Smallford | 95m |
| Three Horseshoes Ph (Hatfield Road) | Smallford | 123m |
| Smallford Roundabout (Station Road) | Smallford | 152m |
| Lyon Way (Hatfield Road) | Oaklands | 449m |
| Hatfield (Herts) Station | 3.9km |
| St Albans City Station | 4km |
| Welham Green Station | 4.6km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Acrewood | 691m | ||
| Smallford Lane | 16:45 | 12:00 | 1,106m |
| Cranbrook Drive | 16:00 | 11:15 | 1,143m |
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 AL4 0HL:
| 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 |
| E07000240 | St Albans |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for AL4 0HL:
| Code | Name | |
|---|---|---|
| OA | E00120252 | |
| LSOA | E01023680 | St Albans 015D |
| MSOA | E02004938 | St Albans 015 |
| AL4 0HR | Oaklands Lane | 121m |
| AL4 0HA | Station Road | 159m |
| AL4 0HP | Hatfield Road | 160m |
| AL4 0HS | Oaklands Lane | 354m |
| AL4 0HB | Station Road | 381m |
| AL4 0FR | Pasture View | 438m |
| AL4 0HJ | Springfield Road | 476m |
| AL4 0HH | Springfield Road | 490m |
| AL4 0HQ | Wilkins Green Terrace | 544m |
| AL4 0JY | Acrewood Way | 721m |