BT57 postcode area guide — Causeway Coast and Glens
House prices, crime, broadband speeds, mobile signal, schools and demographics for the BT57 postcode district in Causeway Coast and Glens — every official dataset on one page.
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Where is BT57?
Broadband & internet speeds in BT57
Strong coverage
Superfast (30Mb+)
78.6%
Ultrafast (300Mb+)
64%
Gigabit-capable
64%
Below USO (10Mb)
2%
Broadband availability in the BT57 postcode district (Causeway Coast and Glens) is Strong — superfast is near-universal and gigabit is rolling out. Across the 178 postcodes Ofcom measures in BT57, superfast broadband (30 Mbit/s or faster) reaches 78.6% of premises and gigabit-capable lines are available to 64%.
Around 2% of premises in BT57 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 BT57
| Postcode | Superfast | Gigabit |
|---|---|---|
| BT57 8AA | 38.5% | 38.5% |
| BT57 8AB | 50% | 0% |
| BT57 8AD | 100% | 100% |
| BT57 8AE | 100% | 100% |
| BT57 8AF | 100% | 100% |
| BT57 8AG | 22.2% | 22.2% |
| BT57 8AH | 100% | 100% |
| BT57 8AJ | 100% | 100% |
| BT57 8AN | 100% | 90% |
| BT57 8AP | 100% | 100% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Causeway Coast and Glens
Ofcom's coverage model for the wider Causeway Coast And Glens district (71,654 premises):
4G indoors — all networks
71.6%
4G outdoors — all networks
97.2%
5G outdoors — all networks
3.8%
Voice indoors — all networks
75.9%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in BT57
Police recorded 3 incidents within about a mile of the centre of BT57 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 2 | 66.7% |
| Vehicle crime | 1 | 33.3% |
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).
Food hygiene ratings in BT57
60 rated food businesses operate in BT57. 45 hold the top rating of 5, 7 are rated 4, and 2 are rated 2 or below.
Among the 5-rated: Ballylough B & B, Ballyness Service Station, Bayview Hotel, Bilberry Mill, Bistro at the Courthouse.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Phone area codes for Causeway Coast and Glens
Landlines around BT57 typically use:
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What's it like living in BT57?
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Moving to BT57? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Causeway Coast and Glens — free, no-obligation quote.
Postcodes in BT57
Neighbouring districts
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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.