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SN15

Postcode district

Postcode district covering Chippenham and Gladstone Parade, in Wiltshire.

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 SN15 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 68% of people in SN15 live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£320,000
Joint 961st most expensive of 2,235
Worked out by Open Index
Population
37,170
549th most populated of 2,756
ONS Census 2021 · 2021
People in radon Affected Area squares
68%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
73.3%
UK 87.8%
Ofcom · Jan 2026

How SN15 compares

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

SN15Middle
Median sale price18 postcode districts, SN · 2025
Median sale price: every postcode district in SN18 areas from £249,000 to £445,000. The middle area is £322,500. SN15 is £320,000.
£320,0009th cheapest
Population19 postcode districts, SN · 2021
Population: every postcode district in SN19 areas from 595 to 54,152. The middle area is 27,872. SN15 is 37,170.
37,1704th most populated
People in radon Affected Area squares19 postcode districts, SN · 2022
People in radon Affected Area squares: every postcode district in SN19 areas from 0.0% to 90.0%. The middle area is 24.0%. SN15 is 68.0%.
68%4th most people in radon Affected Areas
Gigabit broadband coverage19 postcode districts, SN · Jan 2026
Gigabit broadband coverage: every postcode district in SN19 areas from 33.6% to 99.7%. The middle area is 81.2%. SN15 is 73.3%.
73.3%6th lowest

Is SN15 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SN15 at a rate of 59.0 per 1,000 people.

That compares with 66.2 per 1,000 people across the SN postcode area.

In August 2026 alone, 211 cases of crime and anti-social behaviour were recorded in SN15.

In the 12 months to August 2026, the most common types were violence and sexual offences (870), anti-social behaviour (551) and other crime (371).

A year earlier, the recorded crime rate in SN15 was 58.8 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 SN15, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so SN15 has no single figure. Of its 24 neighbourhoods with a rank:
  • Decile 2: 1 neighbourhood
  • Decile 3: 1 neighbourhood
  • Decile 4: 1 neighbourhood
  • Decile 6: 5 neighbourhoods
  • Decile 7: 5 neighbourhoods
  • Decile 8: 1 neighbourhood
  • Decile 9: 5 neighbourhoods
  • Decile 10 (England’s least deprived 10%): 5 neighbourhoods

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

Neighbourhoods in SN15

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Wiltshire 004B1,45315.7 per 1,000792.4%
Wiltshire 004C1,64819.6 per 1,000785.8%
Wiltshire 007B1,05027.2 per 1,000743.8%
Wiltshire 007D3,5186.8 per 1,00096.7%
Wiltshire 007I2,14339.9 per 1,000735.2%
Wiltshire 008A2,39541.0 per 1,000789.0%
Wiltshire 009C1,35169.7 per 1,000293.1%
Wiltshire 009D1,55855.8 per 1,000994.7%
Wiltshire 009E1,65232.0 per 1,0001099.4%
Wiltshire 009F1,21435.9 per 1,000994.3%
Wiltshire 011B1,535501.5 per 1,000327.0%
Wiltshire 011C1,53564.2 per 1,000993.7%
Wiltshire 011D1,414101.6 per 1,000462.5%
Wiltshire 011E2,51140.8 per 1,0001086.2%
Wiltshire 013E1,43717.6 per 1,000694.7%
Wiltshire 013F1,50043.2 per 1,000890.5%
Wiltshire 014A1,32616.4 per 1,000699.1%
Wiltshire 014B1,31816.5 per 1,00010100.0%
Wiltshire 014C1,23754.5 per 1,000995.1%
Wiltshire 014D1,24517.9 per 1,0001086.2%
Wiltshire 014E1,58038.1 per 1,0001099.9%
Wiltshire 018E1,33861.9 per 1,000687.7%
Wiltshire 028A1,66726.8 per 1,000625.4%
Wiltshire 028B1,54634.8 per 1,000619.5%

MPs for SN15

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 SN154

Postcode sectors in SN156

Council1

Towns in SN151

Postcode districts next to SN158

More in the SN postcode area2

SN15 in brief

SN15 is a postcode district covering Chippenham and Gladstone Parade, in Wiltshire.

About 38,673 people lived in SN15 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £320,000 in 2025 across 650 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 59.0 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in SN15 was £320,000 in 2025.

SN15 had 37,170 usual residents at the census.

About 68% of people in SN15 live in a 1 km square that the radon atlas marks as a radon Affected Area.

In SN15, 73.3% of homes and businesses could get gigabit-capable broadband in January 2026.