| District | Post Town | Coverage | Postcodes |
|---|---|---|---|
| SM1 | Sutton | Sutton, Rose Hill, The Wrythe, Carshalton, Benhilton, Erskine Village | 849 |
| SM2 | Sutton | Belmont, South Sutton, East Ewell | 589 |
| SM3 | Sutton | North Cheam | 380 |
| SM4 | Morden | Morden, Morden Park, Lower Morden, St. Helier | 586 |
| SM5 | Carshalton | Carshalton, Carshalton Beeches, Carshalton on the Hill, The Wrythe, Carshalton Village, Eastern St. Helier, Middleton Circle | 716 |
| SM6 | Wallington | Wallington, Beddington, Hackbridge, Roundshaw, South Beddington | 759 |
| SM7 | Banstead | Banstead | 469 |