# SN13

Postcode district covering Corsham, Pickwick and Box, in Wiltshire.

SN13 is a postcode district covering Corsham, Pickwick and Box, in Wiltshire. Median sale price £375,000 in 2025. Recorded crime 42.4 per 1,000 people.

Postcode district. Code SN13. In: [Postcodes](https://openindex.co.uk/postcode) › [SN](https://openindex.co.uk/postcode/sn)

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 SN13 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £375,000** (2025). The median price paid for a home in SN13 was £375,000 in 2025. Joint 674th 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/sn13#f-house-sales-median-price
- **Population: 17,773** (2021). SN13 had 17,773 usual residents at the census (ONS Census 2021). 1,154th 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/sn13#f-population
- **People in radon Affected Area squares: 61%** (2022). About 61% of people in SN13 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/sn13#f-radon-affected-share
- **Gigabit broadband coverage: 77.9%** (January 2026). In SN13, 77.9% 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/sn13#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=SN13) (Worked out by Open Index · 2022): About 61% of people in SN13 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=SN13) (Worked out by Open Index · 2025): 294 homes were sold in SN13 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=SN13) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for SN13.
- [Population by postcode district](https://openindex.co.uk/map/population?place=SN13) (Census 2021, England and Wales): SN13 had 17,773 usual residents at the census.

## How SN13 compares

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

| Measure | SN13 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £375,000 | joint 4th most expensive | 18 postcode districts, SN · 2025 |
| Population | 17,773 | 6th least populated | 19 postcode districts, SN · 2021 |
| People in radon Affected Area squares | 61% | joint 5th most people in radon Affected Areas | 19 postcode districts, SN · 2022 |
| Gigabit broadband coverage | 77.9% | 7th lowest | 19 postcode districts, SN · Jan 2026 |

## Is SN13 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SN13 at a rate of 42.4 per 1,000 people.
That compares with 66.2 per 1,000 people across the SN postcode area.
In August 2026 alone, 82 cases of crime and anti-social behaviour were recorded in SN13.
In the 12 months to August 2026, the most common types were violence and sexual offences (319), anti-social behaviour (160) and other crime (131).
A year earlier, the recorded crime rate in SN13 was 39.2 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 SN13, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so SN13 has no single figure. Of its 10 neighbourhoods with a rank:
- Decile 4: 1 neighbourhood
- Decile 5: 1 neighbourhood
- Decile 7: 1 neighbourhood
- Decile 8: 3 neighbourhoods
- Decile 9: 3 neighbourhoods
- Decile 10 (England’s least deprived 10%): 1 neighbourhood

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

## Neighbourhoods in SN13

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Wiltshire 017A](https://openindex.co.uk/wiltshire/neighbourhood/e01031888) | 1,417 | 48.6 per 1,000 | 9 | 25.0% |
| [Wiltshire 017B](https://openindex.co.uk/wiltshire/neighbourhood/e01031889) | 2,477 | 53.2 per 1,000 | 7 | 89.8% |
| [Wiltshire 017C](https://openindex.co.uk/wiltshire/neighbourhood/e01031890) | 1,767 | 30.2 per 1,000 | 9 | 31.7% |
| [Wiltshire 018A](https://openindex.co.uk/wiltshire/neighbourhood/e01031931) | 1,916 | 81.8 per 1,000 | 8 | 92.5% |
| [Wiltshire 018B](https://openindex.co.uk/wiltshire/neighbourhood/e01031932) | 1,567 | 47.7 per 1,000 | 8 | 91.5% |
| [Wiltshire 018C](https://openindex.co.uk/wiltshire/neighbourhood/e01031933) | 1,808 | 35.4 per 1,000 | 5 | 98.6% |
| [Wiltshire 018D](https://openindex.co.uk/wiltshire/neighbourhood/e01031941) | 1,762 | 39.1 per 1,000 | 9 | 70.3% |
| [Wiltshire 018F](https://openindex.co.uk/wiltshire/neighbourhood/e01031952) | 2,348 | 65.6 per 1,000 | 4 | 84.2% |
| [Wiltshire 018H](https://openindex.co.uk/wiltshire/neighbourhood/e01034526) | 1,288 | 25.6 per 1,000 | 8 | 97.6% |
| [Wiltshire 018I](https://openindex.co.uk/wiltshire/neighbourhood/e01034527) | 1,506 | 34.6 per 1,000 | 10 | 99.6% |

## Your MP

- [Chippenham](https://openindex.co.uk/constituency/chippenham): Sarah Gibson (Liberal Democrat), MP since July 2024. 70% of the people here.
- [Melksham and Devizes](https://openindex.co.uk/constituency/melksham-and-devizes): Brian Mathew (Liberal Democrat), MP since July 2024. 30% of the people here.
- [South Cotswolds](https://openindex.co.uk/constituency/south-cotswolds): Dr Roz Savage (Liberal Democrat), MP since July 2024. 0.2% 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 SN13

[Box, Colerne & Rudloe](https://openindex.co.uk/wiltshire/box-colerne-and-rudloe), [Corsham, Bowden Hill & Lacock](https://openindex.co.uk/wiltshire/corsham-bowden-hill-and-lacock)

## Postcode sectors in SN13

[SN13 0 (191 postcodes)](https://openindex.co.uk/postcode/sn13-0), [SN13 8 (187 postcodes)](https://openindex.co.uk/postcode/sn13-8), [SN13 9 (288 postcodes)](https://openindex.co.uk/postcode/sn13-9)

## Council

[Wiltshire](https://openindex.co.uk/wiltshire)

## Towns in SN13

[Corsham](https://openindex.co.uk/town/corsham)

## Postcode districts next to SN13

[BA1](https://openindex.co.uk/postcode/ba1), [BA15](https://openindex.co.uk/postcode/ba15), [SN12](https://openindex.co.uk/postcode/sn12), [SN14](https://openindex.co.uk/postcode/sn14), [SN15](https://openindex.co.uk/postcode/sn15)

## Nearest rail stations

[Melksham (5.8 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-2.1445,51.3798)

## More in the SN postcode area

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

## SN13 in brief

SN13 is a postcode district covering Corsham, Pickwick and Box, in Wiltshire.
About 18,969 people lived in SN13 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £375,000 in 2025 across 294 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 42.4 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SN13 was £375,000 in 2025.
SN13 had 17,773 usual residents at the census.
About 61% of people in SN13 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In SN13, 77.9% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: SN13
- Postcode area: [SN](https://openindex.co.uk/postcode/sn)
- Constituency: [Chippenham †](https://openindex.co.uk/constituency/chippenham)
- Council: [Wiltshire †](https://openindex.co.uk/wiltshire)
- Area: 44.48 km²
- People, mid-2024: 18,969*
- Neighbourhoods: 10
- Output areas: 57

* 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

[SN14](https://openindex.co.uk/postcode/sn14), [SN12](https://openindex.co.uk/postcode/sn12), [BA1](https://openindex.co.uk/postcode/ba1), [SN15](https://openindex.co.uk/postcode/sn15), [BA15](https://openindex.co.uk/postcode/ba15)

## Latest updates for SN13

- 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/SN13

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sn13, or to one figure with its anchor, https://openindex.co.uk/postcode/sn13#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/sn13