B31 4 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 4 postal sector is the Northfield Delivery Office.
In the year 2017 there were 126 house sales in the B31 4 with the average house price being £136,534.
Waterways within the B31 4 postcode sector include the River Rea.
The B31 4 postcode sector is crossed by a railway.