Compare

SW3

Postcode district

Postcode district covering Chelsea and Brompton, in Kensington and Chelsea.

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 SW3 postcode. How census figures are added up

Open in map

Radon Affected Area by postcode district

Worked out by Open Index · 2022

Under 1%90% or more

About 0% of people in SW3 live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£1,500,000
10th most expensive of 2,235
Worked out by Open Index
Population
18,853
1,219th least populated of 2,756
ONS Census 2021 · 2021
People in radon Affected Area squares
0%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
94.8%
UK 87.8%
Ofcom · Jan 2026

How SW3 compares

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

SW3Middle
Median sale price26 postcode districts, SW · 2025
Median sale price: every postcode district in SW26 areas from £467,500 to £2,525,000. The middle area is £790,825. SW3 is £1,500,000.
£1,500,0005th most expensive
Population28 postcode districts, SW · 2021
Population: every postcode district in SW28 areas from 250 to 86,975. The middle area is 20,222. SW3 is 18,853.
18,85314th least populated
People in radon Affected Area squares28 postcode districts, SW · 2022
People in radon Affected Area squares: every postcode district in SW28 areas from 0.0% to 0.0%. The middle area is 0.0%. SW3 is 0.0%.
0%
Gigabit broadband coverage28 postcode districts, SW · Jan 2026
Gigabit broadband coverage: every postcode district in SW28 areas from 76.8% to 96.3%. The middle area is 92.3%. SW3 is 94.8%.
94.8%5th highest

Is SW3 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SW3 at a rate of 175.2 per 1,000 people.

That compares with 126.0 per 1,000 people across the SW postcode area.

In August 2026 alone, 262 cases of crime and anti-social behaviour were recorded in SW3.

In the 12 months to August 2026, the most common types were other crime (657), anti-social behaviour (594) and shoplifting (545).

A year earlier, the recorded crime rate in SW3 was 206.6 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 SW3, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so SW3 has no single figure. Of its 16 neighbourhoods with a rank:
  • Decile 3: 4 neighbourhoods
  • Decile 4: 1 neighbourhood
  • Decile 6: 2 neighbourhoods
  • Decile 7: 5 neighbourhoods
  • Decile 8: 3 neighbourhoods
  • Decile 9: 1 neighbourhood

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

Neighbourhoods in SW3

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Kensington and Chelsea 012B1,088448.8 per 1,000783.6%
Kensington and Chelsea 012C1,249406.2 per 1,000895.1%
Kensington and Chelsea 012D1,144102.4 per 1,000797.7%
Kensington and Chelsea 014A1,080448.9 per 1,000790.3%
Kensington and Chelsea 014B1,224167.8 per 1,000398.8%
Kensington and Chelsea 014C1,323139.4 per 1,000499.9%
Kensington and Chelsea 014D1,25689.0 per 1,000696.5%
Kensington and Chelsea 014E1,089124.2 per 1,0003100.0%
Kensington and Chelsea 018A1,25059.0 per 1,000396.0%
Kensington and Chelsea 018B1,69065.0 per 1,000897.7%
Kensington and Chelsea 018C1,04199.9 per 1,000793.4%
Kensington and Chelsea 018E1,276210.7 per 1,000884.8%
Kensington and Chelsea 019A1,147130.8 per 1,000692.9%
Kensington and Chelsea 019B1,169112.0 per 1,000395.4%
Kensington and Chelsea 019D1,285235.4 per 1,000796.5%
Kensington and Chelsea 019E1,194424.8 per 1,000989.2%

MPs for SW3

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

Middle areas in SW34

Postcode sectors in SW37

Council1

Towns in SW31

Postcode districts next to SW35

Nearest rail stations4

More in the SW postcode area2

SW3 in brief

SW3 is a postcode district covering Chelsea and Brompton, in Kensington and Chelsea.

About 19,471 people lived in SW3 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £1,500,000 in 2025 across 306 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 175.2 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in SW3 was £1,500,000 in 2025.

SW3 had 18,853 usual residents at the census.

About 0% of people in SW3 live in a 1 km square that the radon atlas marks as a radon Affected Area.

In SW3, 94.8% of homes and businesses could get gigabit-capable broadband in January 2026.