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.
|Type of Property||2018 Average||2018 Sales||2017 Average||2017 Sales||2016 Average||2016 Sales||2015 Average||2015 Sales|
|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|