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SN4

UK postcode district

Updated September 2026

District overview

Postcode units
1,388
Current units
916
Coordinate coverage
100%
Electoral wards
9

Coverage context

Countries represented
England
English regions represented
South West
Local authority codes
2
Terminated postcode units
472

Postcode sectors in SN4

Choose a sector to browse its complete postcode-unit directory.

6 sectors

Property

Across this district

View property report
16,125 recorded sales at this postcode
Address Date Price
5, The Orchard, Chiseldon, Swindon, SN4 0PH 23 July 2026 £425,000
16, Squires Hill Close, Royal Wootton Bassett, Swindon, SN4 8LS 21 July 2026 £440,000
78, Lime Kiln, Royal Wootton Bassett, Swindon, SN4 7HG 20 July 2026 £130,000

Schools

Across this district

View schools report
Open schools
13
Primary
10
Secondary
2

Recorded crime

Across this district

View crime report
Published events
1,839
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 790
  • Anti social behaviour 282
  • Public order 167
  • Criminal damage and arson 165
  • Other theft 107

Census 2021

Population and age profile

SN4 usual residents
29,504
Age-profile population
29,450

Age bands in SN4

Postcode district
Age 0 to 14
15.7%

4,618 residents

Age 15 to 24
9.3%

2,751 residents

Age 25 to 44
20.9%

6,155 residents

Age 45 to 64
29.9%

8,803 residents

Age 65 and over
24.2%

7,123 residents

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.

Fixed broadband coverage

The median Ofcom availability percentage across 795 current postcode units in this district. Each postcode is weighted equally, not by premises.

Superfast, 30 Mbit/s+
100%
Ultrafast, 100 Mbit/s+
100%
Ultrafast, 300 Mbit/s+
100%
Gigabit-capable
100%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
0%

667 postcode units had 100% superfast coverage, 613 had 100% gigabit-capable coverage, and 15 had at least some premises without decent fixed or fixed-wireless access.

Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

NHS ODS

GP practices

3

in this district

  • NEW COURT SURGERY

    BOROUGH FIELDS, WOOTTON BASSETT, SWINDON, SN4 7AX

    ODS code J83055

  • RIDGEWAY VIEW FAMILY PRACTICE

    BARRETT WAY, WROUGHTON, SWINDON, SN4 9LW

    ODS code J83009

  • TINKERS LANE SURGERY

    ROYAL WOOTTON BASSETT, SWINDON, SN4 7AT

    ODS code J83029

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Evidence in context

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Property market

Recorded sales

The five-year median is £321,000 from 2,389 recorded sales in SN4. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Wiltshire is £328,908 in June 2026, up 2.7% year on year.

Schools

Published establishments

13 open schools are in scope, including 10 primary and 2 secondary schools.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

Published police records

1,839 published events cover 12 months, averaging 153.25 events per published month. The largest recorded category is Violence and sexual offences with 790 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.