SN25 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 816 postcodes across 6 sectors in Swindon.
Gigabit
97%
Superfast
98%
Postcodes
816
SN25 is Swindon's third outward code, with 97% gigabit availability across 816 postcodes. This makes it one of the region's strongest performers.
Broadband speeds in SN25
Share of SN25 premises by the fastest download speed available, averaged across all 816 postcodes in the district.
Gigabit reaches 97%, representing excellent cable coverage across Swindon's outer suburban belt. Superfast is 97.9%, near-universal basic access. Speed profile is extremely concentrated: 97% sit at 300+ Mbps, 0.9% at 30 to 300 Mbps, and 0.1% below 10 Mbps. SN25 is among the best-connected outward codes nationally. Cable networks provide all high-speed capacity; no full fibre infrastructure is recorded. Fewer than one in 1,000 postcodes falls below gigabit capability. Speed is not a limiting factor in SN25. Service quality, cost, and data caps are what matter. All 816 postcodes have mature cable infrastructure.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
0%
Premises that can use a fixed wireless access service
Broadband by sector
SN25 splits into 6 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| SN25 1 | 173 | 100% | TBC | 97% |
| SN25 2 | 319 | 98% | TBC | 97% |
| SN25 3 | 152 | 100% | TBC | 99% |
| SN25 4 | 160 | 100% | TBC | 99% |
| SN25 5 | 6 | 68% | TBC | 67% |
| SN25 6 | 6 | 0% | TBC | 0% |
All SN25 1 postcodes (173)
All SN25 2 postcodes (319)
All SN25 3 postcodes (152)
All SN25 4 postcodes (160)
Best deals
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Living in Swindon
SN25's 816 postcodes represent Swindon's outer suburban belt. The 97% gigabit reflects full cable rollout across all areas, even distant from the town centre.
Remote worker score
55/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
SN25 broadband FAQs
How connected is SN25?
Extremely. 97% of postcodes support gigabit. Only 3% sit below, and those reach 30-300 Mbps.
How does SN25 stack against SN1 and SN2?
All three are elite. SN2 is 98.1%, SN1 is 95.5%, and SN25 is 97%. All represent Swindon's best connectivity.
Will my postcode have gigabit?
Almost certainly. 97% do. Even the 3% minority access 30+ Mbps. Risk is minimal.
Is fibre infrastructure deployed?
No full fibre is recorded. Cable delivers all gigabit capability in SN25.
Neighbouring districts
Check your exact postcode
Every postcode in SN25 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources