SO40 3 is a postcode sector within the SO40 postcode district which is within the SO Southampton postcode area.
The Royal Mail delivery office for the SO40 3 postal sector is the Totton Delivery Office.
In the year 2017 there were 113 house sales in the SO40 3 with the average house price being £347,738.
Waterways within the SO40 3 postcode sector include the River Test.
The SO40 3 postcode sector is crossed by the South Western Main Line (SWML) railway.