The NN3 5 postcode sector is within the county of Northamptonshire in the East Midlands region of England..
NN3 5 is a postcode sector within the NN3 postcode district which is within the NN Northampton postcode area.
The Royal Mail delivery office for the NN3 5 postal sector is the Northampton East Nn3b Delivery Office.
The area of the NN3 5 postcode sector is 1.74 square miles which is 4.50 square kilometres or 1,112.31 square acres.
The NN3 5 postcode sector is crossed by the A45 Major A road.
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