The PO12 3 postcode sector is within the county of Hampshire in the South East of England.
PO12 3 is a postcode sector within the PO12 postcode district which is within the PO Portsmouth postcode area.
The Royal Mail delivery office for the PO12 3 postal sector is the Gosport Delivery Office.
The area of the PO12 3 postcode sector is 1.16 square miles which is 3.01 square kilometres or 743.54 square acres.
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