The AL7 3 postcode sector is within the county of Hertfordshire in the East of England.
AL7 3 is a postcode sector within the AL7 postcode district which is within the AL St Albans postcode area.
The Royal Mail delivery office for the AL7 3 postal sector is the Welwyn Garden City Delivery Office.
The area of the AL7 3 postcode sector is 0.78 square miles which is 2.01 square kilometres or 496.04 square acres.
The AL7 3 postcode sector is crossed by a railway.
Explore the al7 3 postcode sector by using our free interactive map.
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|The AL7 3 Sector is within these Local Authorities||The AL7 3 Sector is within these Counties||
||The AL7 3 Sector is within these Water Company Areas||
|Welwyn Garden City||Town|