LL57 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 883 postcodes across 4 sectors in Gwynedd.
Full fibre
0%
Gigabit
56%
Superfast
94%
Postcodes
883
LL57 spans 883 Gwynedd postcodes (the largest in this batch) with moderate gigabit reach (55.9%) supported by cable. Wireless infrastructure covers 28.4%, a substantial supplementary role.
Broadband speeds in LL57
Share of LL57 premises by the fastest download speed available, averaged across all 883 postcodes in the district.
Spanning 883 postcodes, LL57 is this batch's largest postcode district. Gigabit reaches 55.9%, with an anomaly: speed_300_plus_share is 57.7%, slightly higher, reflecting rounding or wireless infrastructure contributing to the ultrafast tier. Wireless infrastructure is present at 28.4%, a notable component (zero full-fibre). Superfast covers 93.6%. The speed breakdown shows: 57.7% access 300+ Mbps (cable and wireless), 36% sit in the 30-300 superfast band, and 3% fall below 10 Mbps. Below-USO premises are negligible at 0.3%. LL57's enormous size means internal variance is likely high; cable concentrates in largest settlements, wireless technology bridges mid-density areas, and copper fringes create the 3% slow-speed tail.
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
28%
Premises that can use a fixed wireless access service
Broadband by sector
LL57 splits into 4 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 |
|---|---|---|---|---|
| LL57 1 | 168 | 92% | 0% | 33% |
| LL57 2 | 266 | 98% | 0% | 79% |
| LL57 3 | 228 | 94% | 0% | 38% |
| LL57 4 | 221 | 90% | 0% | 64% |
All LL57 1 postcodes (168)
All LL57 2 postcodes (266)
All LL57 3 postcodes (228)
All LL57 4 postcodes (221)
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Living in Gwynedd
LL57 demonstrates how large rural postcode districts integrate cable and wireless infrastructure to achieve reasonable connectivity despite geographic dispersion and scale.
Remote worker score
53/100
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
LL57 broadband FAQs
Why is wireless infrastructure so prominent in LL57?
At 883 postcodes, LL57 spans territories beyond cost-effective cable reach; wireless technology extends service to mid-density rural areas.
Is gigabit commonly available in LL57?
Moderately; 55.9% have gigabit, whilst wireless infrastructure and copper deliver superfast and sub-superfast alternatives to the rest.
How large is LL57?
LL57 is the batch's largest, comprising 883 postcodes across North Gwynedd.
What percentage of LL57 falls below USO standards?
Only 0.3%, a very low rate for such a large and dispersed district.
Neighbouring districts
Check your exact postcode
Every postcode in LL57 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