SN4 postcode area guide — Swindon
House prices, crime, broadband speeds, mobile signal, schools and demographics for the SN4 postcode district in Swindon — every official dataset on one page.
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Where is SN4?
Broadband & internet speeds in SN4
Strong coverage
Superfast (30Mb+)
87.8%
Ultrafast (300Mb+)
79.7%
Gigabit-capable
79.3%
Below USO (10Mb)
1.6%
Broadband availability in the SN4 postcode district (Swindon) is Strong — superfast is near-universal and gigabit is rolling out. Across the 799 postcodes Ofcom measures in SN4, superfast broadband (30 Mbit/s or faster) reaches 87.8% of premises and gigabit-capable lines are available to 79.3%.
Around 1.6% of premises in SN4 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.
Sample postcodes in SN4
| Postcode | Superfast | Gigabit |
|---|---|---|
| SN4 0AA | 83.3% | 83.3% |
| SN4 0AB | 100% | 100% |
| SN4 0AD | 93.3% | 93.3% |
| SN4 0AE | 100% | 100% |
| SN4 0AF | 100% | 100% |
| SN4 0AG | 100% | 100% |
| SN4 0AH | 100% | 100% |
| SN4 0AJ | 100% | 100% |
| SN4 0AL | 100% | 100% |
| SN4 0AN | 94.4% | 94.4% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Swindon
Ofcom's coverage model for the wider Swindon district (106,049 premises):
4G indoors — all networks
94.3%
4G outdoors — all networks
99.9%
5G outdoors — all networks
92.2%
Voice indoors — all networks
97.9%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in SN4
Police recorded 4 incidents within about a mile of the centre of SN4 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Anti-social behaviour | 2 | 50.0% |
| Other theft | 1 | 25.0% |
| Violence & sexual offences | 1 | 25.0% |
Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).
House prices in SN4
Based on 337 sales registered with HM Land Registry in the last 12 months, the median sold price in SN4 is £320,000, down 5.2% on the previous year (£337,500).
Detached
£487,500
98 sales
Semi-detached
£315,000
103 sales
Terraced
£278,000
94 sales
Flat / maisonette
£158,000
33 sales
Latest recorded sales in SN4
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 15 May 2026 | £345,000 | Semi-detached | Branscombe Drive | SN4 8HS |
| 11 May 2026 | £278,000 | Terraced | Crosstrees | SN4 8FB |
| 8 May 2026 | £230,000 | Terraced | Thorney Park | SN4 0QR |
| 6 May 2026 | £382,500 | Terraced | Horns Lane | SN4 7RH |
| 1 May 2026 | £315,000 | Semi-detached | Clarendon Drive | SN4 8BU |
| 30 Apr 2026 | £280,000 | Terraced | Swindon Road | SN4 9AF |
| 29 Apr 2026 | £220,000 | Terraced | Dykes Mews | SN4 0NF |
| 28 Apr 2026 | £1,100,000 | Detached | SN4 8EH | |
| 27 Apr 2026 | £540,000 | Detached | Hall Close | SN4 9LD |
| 27 Apr 2026 | £385,000 | Detached | Old Bakery Road | SN4 0GL |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Who lives here? Swindon demographics
Census 2021 figures for the wider Swindon district (233,411 residents, 95,861 households):
| Age profile | |
|---|---|
| Under 15 | 19.8% |
| 15–29 | 23.2% |
| 30–44 | 21.4% |
| 45–64 | 19.7% |
| 65+ | 15.9% |
| Housing tenure | |
|---|---|
| Owner-occupied | 63.7% |
| Private rented | 19.5% |
| Social rented | 5.4% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around SN4
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Royal Wootton Bassett Academy | Secondary | 11–18 | 1,714 | SN4 7HG |
| The Ridgeway School & Sixth Form College | Secondary | 11–18 | 1,616 | SN4 9DJ |
| St Bartholomew's Primary Academy | Primary | 4–11 | 398 | SN4 8AZ |
| Wroughton Junior School | Primary | 7–11 | 304 | SN4 9DL |
| Longleaze Primary School | Primary | 4–11 | 248 | SN4 8BA |
| Wanborough Primary School | Primary | 4–11 | 201 | SN4 0EJ |
| Wroughton Infant School | Primary | 4–7 | 191 | SN4 9LE |
| Noremarsh Junior School | Primary | 7–11 | 169 | SN4 8BT |
Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.
Food hygiene ratings in SN4
166 rated food businesses operate in SN4. 117 hold the top rating of 5, 16 are rated 4, and 2 are rated 2 or below.
Among the 5-rated: Ace Out of School Club Ltd., Aldi Stores Ltd, AMS Care Wiltshire Ltd., Asda Express PFS Chiseldon Camp, Barbury Shooting School.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in SN4
From a sample of 109 Energy Performance Certificates across 9 SN4 postcodes, the most common rating is band C (average band C). 61% of sampled homes are rated C or better.
Band B
14%
Band C
47%
Band D
31%
Band E
6%
Band F
1%
Band G
1%
Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.
Phone area codes for Swindon
Landlines around SN4 typically use:
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What's it like living in SN4?
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Moving to SN4? Sort your connectivity first
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Postcodes in SN4
Neighbouring districts
All Swindon (SN) postcode districts ›
Frequently asked questions
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Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.