BT57 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 178 postcodes across 1 sector in Causeway Coast and Glens.
Full fibre
0%
Gigabit
83%
Superfast
89%
Postcodes
178
Causeway Coast and Glens' BT57 is a small postcode (178 premises) with the weakest gigabit reach on this run at 83%. Below-10Mbps exposure is the highest in the batch at 5.4%.
Broadband speeds in BT57
Share of BT57 premises by the fastest download speed available, averaged across all 178 postcodes in the district.
Gigabit infrastructure covers 82.7% of BT57 postcodes in Causeway Coast and Glens, the weakest reach on this run. Another 5.9% access superfast speeds (30 to 300 Mbps), exceeding the UK average download speed of around 75 Mbps, while 5.4% fall below 10 Mbps, the highest slow-speed concentration on this batch. The universal service obligation shortfall is 1.1%, indicating a small cohort outside reliable broadband. BT57's small size (178 postcodes) and notably lower gigabit reach suggest remote or less-developed infrastructure within Causeway Coast and Glens. Cable networks provide some gigabit access, but coverage is patchier here than in neighbouring postcodes. The postcode is markedly slower than other Causeway areas.
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
1%
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
BT57 splits into 1 postcode sector. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| BT57 8 | 178 | 89% | 0% | 83% |
All BT57 8 postcodes (178)
Best deals
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Living in Causeway Coast and Glens
BT57 is the slowest postcode on this run. Households moving here should expect mixed broadband quality and verify their specific address with providers before committing.
Remote worker score
52/100
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
BT57 broadband FAQs
Why is BT57 so much slower than nearby Causeway postcodes?
BT57's small size (178 postcodes) and its 17-point gigabit shortfall suggest it's a remote or less-developed area within Causeway Coast and Glens.
How many premises in BT57 face real broadband hardship?
About 5.4% fall below 10 Mbps, and 1.1% miss the USO floor. That's the highest slow-speed concentration on this run, though still a small absolute number.
Should I avoid BT57 if broadband quality is important?
Not necessarily, but verify carefully. A 17% non-gigabit rate and 5% below-10Mbps exposure are meaningful. Request a speed check from all available providers.
What's the outlook for someone moving to BT57 with moderate broadband needs?
83% of postcodes access gigabit, and most of the remainder connect via superfast. You're likely fine if you're not gigabit-dependent, but address-level checks are essential.
Neighbouring districts
Check your exact postcode
Every postcode in BT57 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