The HP17 9 postcode sector is within the county of Buckinghamshire in the South East of England.
HP17 9 is a postcode sector within the HP17 postcode district which is within the HP Hemel Hempstead postcode area.
The Royal Mail delivery office for the HP17 9 postal sector is the Aylesbury Vale Postal Delivery Office.
The area of the HP17 9 postcode sector is 2.01 square miles which is 5.21 square kilometres or 1,286.52 square acres.
The HP17 9 postcode sector is crossed by a railway.
The Chilterns area of outstanding natural beauty covers part of the HP17 9 postcode district.
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