# SM3

Postcode district covering North Cheam, Morden Park and Lower Morden, in Sutton.

SM3 is a postcode district covering North Cheam, Morden Park and Lower Morden, in Sutton. Median sale price £550,000 in 2025.

Postcode district. Code SM3. In: [Postcodes](https://openindex.co.uk/postcode) › [SM](https://openindex.co.uk/postcode/sm)

Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SM3 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £550,000** (2025). The median price paid for a home in SM3 was £550,000 in 2025. Joint 197th most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. https://openindex.co.uk/postcode/sm3#f-house-sales-median-price
- **Population: 21,754** (2021). SM3 had 21,754 usual residents at the census (ONS Census 2021). 1,354th most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/postcode/sm3#f-population
- **People in radon Affected Area squares: 25%** (2022). About 25% of people in SM3 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/postcode/sm3#f-radon-affected-share
- **Gigabit broadband coverage: 92.2%** (January 2026). In SM3, 92.2% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/postcode/sm3#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=SM3) (Worked out by Open Index · 2022): About 25% of people in SM3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Sales per year by postcode district](https://openindex.co.uk/map/house-sales-per-year?place=SM3) (Worked out by Open Index · 2025): 281 homes were sold in SM3 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=SM3) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for SM3.
- [Population by postcode district](https://openindex.co.uk/map/population?place=SM3) (Census 2021, England and Wales): SM3 had 21,754 usual residents at the census.

## How SM3 compares

Each postcode district against every other postcode district the measure covers.

| Measure | SM3 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £550,000 | 2nd most expensive | 7 postcode districts, SM · 2025 |
| Population | 21,754 | 2nd least populated | 7 postcode districts, SM · 2021 |
| People in radon Affected Area squares | 25% | 2nd fewest people in radon Affected Areas | 7 postcode districts, SM · 2022 |
| Gigabit broadband coverage | 92.2% | 3rd lowest | 7 postcode districts, SM · Jan 2026 |

## Is SM3 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SM3 at a rate of 61.6 per 1,000 people.
That compares with 75.1 per 1,000 people across the SM postcode area.
In August 2026 alone, 100 cases of crime and anti-social behaviour were recorded in SM3.
In the 12 months to August 2026, the most common types were violence and sexual offences (400), anti-social behaviour (288) and other crime (216).
A year earlier, the recorded crime rate in SM3 was 62.0 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

## Deprivation in SM3, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so SM3 has no single figure. Of its 13 neighbourhoods with a rank:
- Decile 7: 3 neighbourhoods
- Decile 8: 3 neighbourhoods
- Decile 9: 4 neighbourhoods
- Decile 10 (England’s least deprived 10%): 3 neighbourhoods

Source: English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.

## Neighbourhoods in SM3

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Sutton 003A](https://openindex.co.uk/sutton/neighbourhood/e01004130) | 1,764 | 133.1 per 1,000 | 8 | 83.8% |
| [Sutton 003B](https://openindex.co.uk/sutton/neighbourhood/e01004131) | 1,888 | 28.0 per 1,000 | 8 | 86.8% |
| [Sutton 003C](https://openindex.co.uk/sutton/neighbourhood/e01004134) | 1,610 | 91.3 per 1,000 | 7 | 95.7% |
| [Sutton 003D](https://openindex.co.uk/sutton/neighbourhood/e01004135) | 1,453 | 36.3 per 1,000 | 9 | 99.6% |
| [Sutton 003E](https://openindex.co.uk/sutton/neighbourhood/e01004136) | 1,564 | 49.4 per 1,000 | 9 | 97.7% |
| [Sutton 009A](https://openindex.co.uk/sutton/neighbourhood/e01004115) | 1,838 | 26.2 per 1,000 | 9 | 92.2% |
| [Sutton 009B](https://openindex.co.uk/sutton/neighbourhood/e01004118) | 1,810 | 141.4 per 1,000 | 7 | 90.8% |
| [Sutton 009C](https://openindex.co.uk/sutton/neighbourhood/e01004119) | 1,441 | 77.7 per 1,000 | 9 | 90.3% |
| [Sutton 009D](https://openindex.co.uk/sutton/neighbourhood/e01004132) | 1,486 | 27.7 per 1,000 | 10 | 97.1% |
| [Sutton 009E](https://openindex.co.uk/sutton/neighbourhood/e01004133) | 1,564 | 25.9 per 1,000 | 10 | 97.7% |
| [Sutton 016A](https://openindex.co.uk/sutton/neighbourhood/e01004110) | 2,039 | 63.7 per 1,000 | 7 | 82.8% |
| [Sutton 016B](https://openindex.co.uk/sutton/neighbourhood/e01004111) | 1,688 | 88.6 per 1,000 | 8 | 97.7% |
| [Sutton 016D](https://openindex.co.uk/sutton/neighbourhood/e01004120) | 1,514 | 39.5 per 1,000 | 10 | 98.9% |

## Your MP

- [Sutton and Cheam](https://openindex.co.uk/constituency/sutton-and-cheam): Luke Taylor (Liberal Democrat), MP since July 2024. 98% of the people here.
- [Mitcham and Morden](https://openindex.co.uk/constituency/mitcham-and-morden): Dame Siobhain McDonagh (Labour), MP since July 2024. 1.1% of the people here.
- [Epsom and Ewell](https://openindex.co.uk/constituency/epsom-and-ewell): Helen Maguire (Liberal Democrat), MP since July 2024. 0.8% of the people here.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Middle areas in SM3

[Cheam High Street](https://openindex.co.uk/sutton/cheam-high-street), [North Cheam East](https://openindex.co.uk/sutton/north-cheam-east), [Stonecot](https://openindex.co.uk/sutton/stonecot)

## Postcode sectors in SM3

[SM3 8 (161 postcodes)](https://openindex.co.uk/postcode/sm3-8), [SM3 9 (218 postcodes)](https://openindex.co.uk/postcode/sm3-9)

## Council

[Sutton](https://openindex.co.uk/sutton)

## Towns in SM3

[Sutton](https://openindex.co.uk/sutton)

## Postcode districts next to SM3

[KT4](https://openindex.co.uk/postcode/kt4), [KT17](https://openindex.co.uk/postcode/kt17), [SM1](https://openindex.co.uk/postcode/sm1), [SM2](https://openindex.co.uk/postcode/sm2), [SM4](https://openindex.co.uk/postcode/sm4)

## Nearest rail stations

[West Sutton (1.2 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.2052,51.3659), [Cheam (1.4 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.2142,51.3555), [Stoneleigh (1.9 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.2487,51.3634), [Sutton Common (2.0 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.1963,51.3749)

## More in the SM postcode area

[All SM postcode districts](https://openindex.co.uk/postcode/sm), [Every UK postcode area](https://openindex.co.uk/postcode)

## SM3 in brief

SM3 is a postcode district covering North Cheam, Morden Park and Lower Morden, in Sutton.
About 22,137 people lived in SM3 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £550,000 in 2025 across 281 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 61.6 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SM3 was £550,000 in 2025.
SM3 had 21,754 usual residents at the census.
About 25% of people in SM3 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In SM3, 92.2% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: SM3
- Postcode area: [SM](https://openindex.co.uk/postcode/sm)
- Constituency: [Sutton and Cheam †](https://openindex.co.uk/constituency/sutton-and-cheam)
- Council: [Sutton †](https://openindex.co.uk/sutton)
- Area: 3.89 km²
- People, mid-2024: 22,137*
- Neighbourhoods: 13
- Output areas: 61

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the constituency, council, region and nation this postcode district mostly lies in. Its edges do not follow theirs.

## Next door

[SM1](https://openindex.co.uk/postcode/sm1), [SM4](https://openindex.co.uk/postcode/sm4), [KT4](https://openindex.co.uk/postcode/kt4), [KT17](https://openindex.co.uk/postcode/kt17), [SM2](https://openindex.co.uk/postcode/sm2)

## Latest updates for SM3

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/SM3

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sm3, or to one figure with its anchor, https://openindex.co.uk/postcode/sm3#f-house-sales-median-price.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/sm3