Property market
The five-year median is £30,709,359 from 1 recorded sale in SN3 4DB. This is a recorded-sale statistic, not a current valuation.
The latest UK House Price Index average for Swindon is £265,666 in June 2026, up 4.4% year on year.
SN3 4DB
South Marston · Swindon · England
Updated September 2026
Compare this postcodeLocation overview
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- Post town
- Swindon
- Ward
- South Marston
- Local authority
- Swindon
- Constituency
- Swindon North
- Postcode district
- SN3
- Postcode sector
- SN3 4
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- SN3 4DB
- Status
- Current
- Introduced
- 1 October 2018
- Terminated
- Not published
- Postcode area
- SN
- Postcode district
- SN3
- Postcode sector
- SN3 4
- Latitude
- 51.576842
- Longitude
- -1.716121
- British National Grid easting
- 419,768
- British National Grid northing
- 186,480
Statistical and administrative geographies
- Country
- England · E92000001
- Region
- South West · E12000009
- Local authority district
- Swindon · E06000030
- Electoral ward
- South Marston · E05016299
- Parish or community
- E04012669
- Westminster constituency
- Swindon North · E14001536
- Output area
- E00078254
- Lower layer super output area
- Swindon 008A · E01015473
- Middle layer super output area
- Swindon 008 · E02003219
Postcode source versions
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore SN3
Property
3 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| Symmetry Park, Unit 1, Laines Way, South Marston, Swindon, SN3 4DB | 18 October 2022 | £30,709,359 |
| Symmetry Park, Unit 2, Laines Way, South Marston, Swindon, SN3 4DB | 24 September 2020 | £40,309,500 |
| Symmetry Park, Unit 2, Laines Way, South Marston, Swindon, SN3 4DB | 27 November 2019 | £40,309,500 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 39
- Primary
- 26
- Secondary
- 4
- 1.5 km
South Marston Church of England Primary School
Academy converter
- 1.7 km
Covingham Park Primary School
Academy converter
- 1.8 km
Colebrook Infant Academy
Academy converter
Recorded crime
Within 1 mile of this postcode
- Published events
- 286
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 113
- Public order 52
- Criminal damage and arson 27
- Drugs 23
- Anti social behaviour 18
Census 2021
Population and age profile
- Postcode residents
- Not supplied
- Postcode households
- Not supplied
- Residents per household
- Not available
- SN3 4 residents
- 13,036
Age bands in SN3 4
Wider postcode sector- Age 0 to 14
- 15.2%
- Age 15 to 24
- 10%
- Age 25 to 44
- 23.5%
- Age 45 to 64
- 29%
- Age 65 and over
- 22.3%
1,972 residents
1,299 residents
3,054 residents
3,774 residents
2,898 residents
Small counts are adjusted for privacy, so totals can differ slightly between Census tables.
Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.
Fixed broadband coverage
Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.
- 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%
Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.
Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.
GP practices
9
within 5 km
MERCHISTON SURGERY
HIGHWORTH ROAD, STRATTON ST MARGARET, SWINDON, SN3 4BF
ODS code J83001
2.6 km
ELDENE SURGERY
COLINGSMEAD, ELDENE, SWINDON, SN3 3TQ
ODS code J83047
2.7 km
PRIORY ROAD MEDICAL CENTRE
PARK SOUTH, SWINDON, SN3 2EZ
ODS code J83024
3.5 km
KINGSWOOD SURGERY
KINGSWOOD AVENUE, PARK NORTH, SWINDON, SN3 2RJ
ODS code J83038
3.5 km
HAWTHORN MEDICAL CENTRE
MAY CLOSE, CRICKLADE ROAD, SWINDON, SN2 1UU
ODS code J83027
4.4 km
THE LAWN MEDICAL CENTRE
GUILDFORD AVENUE, SWINDON, SN3 1JL
ODS code J83059
4.5 km
WHALEBRIDGE PRACTICE
THE WHALEBRIDGE PRACTICE, SWINDON NHS HEALTH CENTRE, 1 ISLINGTON ST, SWINDON, SN1 2DQ
ODS code J83033
4.8 km
VICTORIA CROSS SURGERY
168-169 VICTORIA ROAD, SWINDON, SN1 3BU
ODS code J83633
4.9 km
ELM TREE SURGERY
HIGH STREET, SHRIVENHAM, SWINDON, SN6 8AG
ODS code K84012
5.0 km
Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.
Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.
Nearby transport
- 0.1 miles
Symmetry Park
BCT · Stratton Park
- 0.3 miles
Symmetry Park
BCT · Stratton Park
- 0.3 miles
Symmetry Park
BCT · Stratton Park
- 0.6 miles
South Marston Turn East
BCT · South Marston
- 0.6 miles
South Marston Turn East
BCT · South Marston
Relative deprivation
English Indices of Deprivation 2025 for Swindon 008A, the published LSOA linked to this postcode. Decile 1 contains the most deprived 10% of English LSOAs and decile 10 the least deprived 10%.
Overall IMD decile
7 of 10
Overall England rank
23,393 of 33,755
- Income
- 7 of 10
- Employment
- 7 of 10
- Education and skills
- 6 of 10
- Health and disability
- 8 of 10
- Crime
- 10 of 10
- Housing and services
- 2 of 10
- Living environment
- 9 of 10
These are relative area statistics, not measures of an individual household, affluence or absolute change. They cannot be compared with indices for other UK nations. Source: English Indices of Deprivation 2025, version 2025-v2.
Flood risk
Environment Agency long-term indicators for the area around addresses in this postcode. They are not an assessment of any individual property and do not show current or forecast flooding.
- High risk addresses
- 0
- Medium risk addresses
- 0
- Low risk addresses
- 0
- Groundwater flood alert area
- Unlikely
Source: Environment Agency flood-risk postcode search tool data, version 2026-06-18. Check the long-term risk for an individual area. © Environment Agency copyright and/or database right 2025. All rights reserved.
Evidence in context
Schools
39 open schools are in scope, including 26 primary and 4 secondary schools. South Marston Church of England Primary School is the nearest published school at 0.9 miles.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
286 published events cover 12 months, averaging 23.833 events per published month. The largest recorded category is Violence and sexual offences with 113 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.