The B31 3 postcode sector stands on the West Midlands and Worcestershire border in the West Midlands region of England..
B31 3 is a postcode sector within the B31 postcode district which is within the B Birmingham postcode area.
The Royal Mail delivery office for the B31 3 postal sector is the Northfield Delivery Office.
The area of the B31 3 postcode sector is 0.79 square miles which is 2.05 square kilometres or 507.05 square acres.
Waterways within the B31 3 postcode sector include the River Rea.
The B31 3 postcode sector is crossed by a railway.
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