# SW1A

Postcode district covering St James's and Whitehall, in Westminster.

SW1A is a postcode district covering St James's and Whitehall, in Westminster. Median sale price £1,765,000 in 2025. Recorded crime 3,392.0 per 1,000 people.

Postcode district. Code SW1A. In: [Postcodes](https://openindex.co.uk/postcode) › [SW](https://openindex.co.uk/postcode/sw)

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 SW1A postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £1,765,000** (2025). The median price paid for a home in SW1A was £1,765,000 in 2025. 6th 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/sw1a#f-house-sales-median-price
- **Population: 559** (2021). SW1A had 559 usual residents at the census (ONS Census 2021). 129th least 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/sw1a#f-population
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in SW1A 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/sw1a#f-radon-affected-share
- **Gigabit broadband coverage: 88.1%** (January 2026). In SW1A, 88.1% 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/sw1a#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=SW1A) (Worked out by Open Index · 2022): About 0% of people in SW1A 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=SW1A) (Worked out by Open Index · 2025): 12 homes were sold in SW1A in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=SW1A) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for SW1A.
- [Population by postcode district](https://openindex.co.uk/map/population?place=SW1A) (Census 2021, England and Wales): SW1A had 559 usual residents at the census.

## How SW1A compares

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

| Measure | SW1A | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £1,765,000 | 2nd most expensive | 26 postcode districts, SW · 2025 |
| Population | 559 | 3rd least populated | 28 postcode districts, SW · 2021 |
| People in radon Affected Area squares | 0% | – | 28 postcode districts, SW · 2022 |
| Gigabit broadband coverage | 88.1% | 4th lowest | 28 postcode districts, SW · Jan 2026 |

## Is SW1A safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SW1A at a rate of 3,392.0 per 1,000 people.
That compares with 126.0 per 1,000 people across the SW postcode area.
In August 2026 alone, 144 cases of crime and anti-social behaviour were recorded in SW1A.
In the 12 months to August 2026, the most common types were other crime (612), theft from the person (405) and violence and sexual offences (355).
A year earlier, the recorded crime rate in SW1A was 3,830.6 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 SW1A, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so SW1A has no single figure. Of its 1 neighbourhood with a rank:
- Decile 8: 1 neighbourhood

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

## Neighbourhoods in SW1A

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Westminster 018C](https://openindex.co.uk/westminster/neighbourhood/e01004736) | 1,466 | 3,454.7 per 1,000 | 8 | 90.7% |

## Your MP

- [Cities of London and Westminster](https://openindex.co.uk/constituency/cities-of-london-and-westminster): Rachel Blake (Labour (Co-op)), MP since July 2024. 99% of the people here.
- [Battersea](https://openindex.co.uk/constituency/battersea): Marsha De Cordova (Labour), MP since July 2024. 1.4% 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 SW1A

[Strand, St James & Mayfair](https://openindex.co.uk/westminster/strand-st-james-and-mayfair)

## Postcode sectors in SW1A

[SW1A 0 (3 postcodes)](https://openindex.co.uk/postcode/sw1a-0), [SW1A 1 (67 postcodes)](https://openindex.co.uk/postcode/sw1a-1), [SW1A 2 (75 postcodes)](https://openindex.co.uk/postcode/sw1a-2)

## Council

[Westminster](https://openindex.co.uk/westminster)

## Towns in SW1A

[City of Westminster](https://openindex.co.uk/town/city-of-westminster)

## Postcode districts next to SW1A

[SW1E](https://openindex.co.uk/postcode/sw1e), [SW1H](https://openindex.co.uk/postcode/sw1h), [SW1P](https://openindex.co.uk/postcode/sw1p), [SW1Y](https://openindex.co.uk/postcode/sw1y), [W1B](https://openindex.co.uk/postcode/w1b), [W1J](https://openindex.co.uk/postcode/w1j), [WC2N](https://openindex.co.uk/postcode/wc2n)

## Nearest rail stations

[Charing Cross (350 m from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.1273,51.5074), [Westminster (450 m from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.1249,51.5013), [London Charing Cross (500 m from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.1248,51.5080), [Embankment (550 m from the middle)](https://openindex.co.uk/map/rail-stations?around=-0.1227,51.5071)

## More in the SW postcode area

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

## SW1A in brief

SW1A is a postcode district covering St James's and Whitehall, in Westminster.
About 602 people lived in SW1A in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £1,765,000 in 2025 across 12 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 3,392.0 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SW1A was £1,765,000 in 2025.
SW1A had 559 usual residents at the census.
About 0% of people in SW1A live in a 1 km square that the radon atlas marks as a radon Affected Area.
In SW1A, 88.1% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: SW1A
- Postcode area: [SW](https://openindex.co.uk/postcode/sw)
- Constituency: [Cities of London and Westminster †](https://openindex.co.uk/constituency/cities-of-london-and-westminster)
- Council: [Westminster †](https://openindex.co.uk/westminster)
- Area: 0.54 km²
- People, mid-2024: 602*
- Neighbourhoods: 1
- Output areas: 2

* 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

[SW1Y](https://openindex.co.uk/postcode/sw1y), [SW1P](https://openindex.co.uk/postcode/sw1p), [SW1H](https://openindex.co.uk/postcode/sw1h), [SW1E](https://openindex.co.uk/postcode/sw1e), [W1J](https://openindex.co.uk/postcode/w1j), [WC2N](https://openindex.co.uk/postcode/wc2n)

## Latest updates for SW1A

- 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/SW1A

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sw1a, or to one figure with its anchor, https://openindex.co.uk/postcode/sw1a#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/sw1a