The BN1 9 postcode sector is within the county of East Sussex in the South East of England.
BN1 9 is a postcode sector within the BN1 postcode district which is within the BN Brighton postcode area.
The Royal Mail delivery office for the BN1 9 postal sector is the Brighton Delivery Office.
The area of the BN1 9 postcode sector is 5.29 square miles which is 13.69 square kilometres or 3,382.60 square acres.
The BN1 9 postcode sector is crossed by the A27 Major A road.
The BN1 9 postcode sector is crossed by a railway.
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