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SM

Postcode area

Postcode area named after Sutton, with 7 districts.

Approximate outline worked out by Open Index from the ONS Postcode Directory: the outline joins its districts’ outlines, each made of the census output areas that hold most of the district’s postcodes.

Open in map

Radon Affected Area by postcode area

Worked out by Open Index · 2022

Under 1%90% or more

About 59% of people in SM live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£470,000
Joint 18th most expensive of 104
Worked out by Open Index
Population
237,526
16th least populated of 120
ONS Census 2021 · 2021
People in radon Affected Area squares
59%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
92.3%
UK 87.8%
Ofcom · Jan 2026

How SM compares

Each dot is a postcode area. The black line marks the middle one.

SMMiddle
Median sale price104 postcode areas, England and Wales · 2025
Median sale price: every postcode area in England and Wales104 areas from £145,000 to £821,250. The middle area is £296,475. SM is £470,000.
£470,000joint 18th most expensive
Population120 postcode areas, UK · 2021
Population: every postcode area in UK120 areas from 22,985 to 2,027,347. The middle area is 503,090. SM is 237,526.
237,52616th least populated
People in radon Affected Area squares120 postcode areas, UK · 2022
People in radon Affected Area squares: every postcode area in UK120 areas from 0.0% to 100.0%. The middle area is 41.0%. SM is 59.0%.
59%joint 43rd most people in radon Affected Areas
Gigabit broadband coverage120 postcode areas, UK · Jan 2026
Gigabit broadband coverage: every postcode area in UK120 areas from 12.0% to 98.0%. The middle area is 88.0%. SM is 92.3%.
92.3%joint 27th highest

Every postcode area ranked: median sale price, population, people in radon affected area squares and gigabit broadband coverage.

Is SM safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SM at a rate of 75.1 per 1,000 people.

In August 2026 alone, 1,510 cases of crime and anti-social behaviour were recorded in SM.

In the 12 months to August 2026, the most common types were violence and sexual offences (6,058), anti-social behaviour (3,441) and other crime (2,882).

A year earlier, the recorded crime rate in SM was 73.5 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.

Postcode districts in SM

NamePeople (census)Median sale priceRecorded crime per 1,000
SM1Sutton, Benhilton43,524£448,500100.1 per 1,000
SM2Belmont, Cheam29,946£380,00055.1 per 1,000
SM3North Cheam, Morden Park21,754£550,00061.6 per 1,000
SM4Morden, Risley Close40,980£505,00066.7 per 1,000
SM5The Wrythe, Carshalton41,421£450,00082.9 per 1,000
SM6Wallington, Bandonhill40,150£415,00079.7 per 1,000
SM7Banstead, Woodmansterne19,751£635,00055.9 per 1,000
SM in brief

The SM postcode area, named after Sutton, has 7 postcode districts.

The median price paid for a home in SM was £470,000 in 2025.

SM had 237,526 usual residents at the census.

About 59% of people in SM live in a 1 km square that the radon atlas marks as a radon Affected Area.

In SM, 92.3% of homes and businesses could get gigabit-capable broadband in January 2026.