The SG11 1 postcode sector is within the county of Hertfordshire in the East of England.
SG11 1 is a postcode sector within the SG11 postcode district which is within the SG Stevenage postcode area.
The Royal Mail delivery office for the SG11 1 postal sector is the Ware Delivery Office.
The area of the SG11 1 postcode sector is 15.93 square miles which is 41.25 square kilometres or 10,193.24 square acres.
Waterways within the SG11 1 postcode sector include the River Rib and The Bourne
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