The SM3 postcode district is a postal district with a population of 21,018 and is within the SM Sutton postcode area.
The area of the SM3 postcode district is 1.80 square miles which is 4.66 square kilometres or 1,151.06 acres.
There are 2 postcode sectors within the SM3 district.
|Postcode Sector||Delivery Office|
|SM3 8||Sutton (sm) Delivery Office|
|SM3 9||Sutton (sm) Delivery Office|