SM3 postcode district
SM3 holds 379 live postcodes around Cheam, in Sutton, Merton, Epsom and Ewell.
Towns and villages with their centre in SM3
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | Cheam | Greater London | 11,286 |
Wards
| Name | Share of postcodes |
|---|---|
| Stonecot | 33% |
| Cheam | 31% |
| North Cheam | 27% |
| Worcester Park South | 7% |
| Lower Morden | 1% |
| Nonsuch | 1% |
| Sutton Central | 0% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Sutton and Cheam | 98% |
| Mitcham and Morden | 1% |
| Epsom and Ewell | 1% |
Deprivation
The middle postcode here sits in decile 8 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 0% of this district's postcodes sit in the most deprived three deciles, 71% in the least deprived three.
Deprivation deciles describe the LSOA neighbourhood each postcode sits in, weighted by postcodes rather than by people, because the postcode file carries no population. A district where the deprived neighbourhoods are densely populated will read better here than it would per resident.
Neighbouring districts in the SM area
SM1 · SM2 · SM4 · SM5 · SM6 · SM7
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.