Compare

SW

Postcode area

Postcode area named after South West London, with 28 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 0% of people in SW live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£666,000
4th most expensive of 104
Worked out by Open Index
Population
901,557
14th most populated of 120
ONS Census 2021 · 2021
People in radon Affected Area squares
0%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
91.7%
UK 87.8%
Ofcom · Jan 2026

How SW compares

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

SWMiddle
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. SW is £666,000.
£666,0004th 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. SW is 901,557.
901,55714th most 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%. SW is 0.0%.
0%joint fewest 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%. SW is 91.7%.
91.7%joint 35th highest

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

Is SW safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SW at a rate of 126.0 per 1,000 people.

In August 2026 alone, 9,821 cases of crime and anti-social behaviour were recorded in SW.

In the 12 months to August 2026, the most common types were violence and sexual offences (26,450), anti-social behaviour (24,611) and other crime (21,732).

A year earlier, the recorded crime rate in SW was 131.4 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 SW

NamePeople (census)Median sale priceRecorded crime per 1,000
SW1ASt James's, Whitehall559£1,765,0003,392.0 per 1,000
SW1EBelgravia960£950,000327.2 per 1,000
SW1HWestminster625£1,050,0001,372.2 per 1,000
SW1PVictoria, South Lambeth13,178£850,000340.1 per 1,000
SW1VPimlico21,590£655,000155.6 per 1,000
SW1WBelgravia, Pimlico7,008£1,574,000391.4 per 1,000
SW1XBelgravia, Hyde Park Corner5,352£2,525,000571.4 per 1,000
SW1YSt James's, Whitehall394No figure7,000.0 per 1,000
SW2Streatham Hill, Brixton56,810£535,000107.7 per 1,000
SW3Chelsea, Brompton18,853£1,500,000175.2 per 1,000
SW4Clapham, Poynders Parade40,856£627,000165.0 per 1,000
SW5Kensington, Earl's Court14,503£822,500161.6 per 1,000
SW6Fulham, Walham Green66,656£790,000102.0 per 1,000
SW7Kensington, Knightsbridge14,444£1,525,000183.4 per 1,000
SW8South Lambeth, Nine Elms38,525£590,000151.1 per 1,000
SW9Brixton, Kennington47,360£510,000191.7 per 1,000
SW10Chelsea, West Brompton16,897£1,075,000145.1 per 1,000
SW11Battersea, Clapham Junction80,761£791,650110.9 per 1,000
SW12Balham, Clapham Common31,606£725,00095.3 per 1,000
SW13Barnes, Hammersmith16,128£1,180,00071.5 per 1,000
SW14Mortlake, East Sheen17,872£963,75068.4 per 1,000
SW15Putney, Roehampton63,454£605,00083.1 per 1,000
SW16Streatham, Norbury86,975£467,50095.4 per 1,000
SW17Tooting Graveney, Upper Tooting63,688£585,000107.3 per 1,000
SW18Wandsworth, The Mews65,724£638,84587.5 per 1,000
SW19Wimbledon80,212£625,00077.4 per 1,000
SW20Cottenham Park, Bushey Mead30,317£730,00050.1 per 1,000
SW95Nine Elms250No figure692.2 per 1,000
SW in brief

The SW postcode area, named after South West London, has 28 postcode districts.

The median price paid for a home in SW was £666,000 in 2025.

SW had 901,557 usual residents at the census.

About 0% of people in SW live in a 1 km square that the radon atlas marks as a radon Affected Area.

In SW, 91.7% of homes and businesses could get gigabit-capable broadband in January 2026.