AL7 1 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 1 postal sector is the Welwyn Garden City Delivery Office.
The area of the AL7 1 postcode sector is 1.09 square miles which is 2.82 square kilometres or 696.10 square acres.
In the year 2017 there were 171 house sales in the AL7 1 with the average house price being £571,499.
The AL7 1 postcode sector is crossed by a railway.
| A | L | 7 | - | 1 | X | X |
| A | L | 7 | Space | 1 | Letter | Letter |
| The AL7 1 Sector is within these Local Authorities |
| The AL7 1 Sector is within these Counties |
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The AL7 1 Sector is within these Water Company Areas |
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| Town | Type |
|---|---|
| Welwyn Garden City | Town |
