LL53 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 807 postcodes across 4 sectors in Gwynedd.
Full fibre
0%
Gigabit
63%
Superfast
84%
Postcodes
807
LL53 is Gwynedd's largest postcode district (807 postcodes) with solid gigabit reach (62.5%) across dispersed terrain. Cable penetration is substantial but uneven.
Broadband speeds in LL53
Share of LL53 premises by the fastest download speed available, averaged across all 807 postcodes in the district.
Spanning 807 postcodes, LL53 is the largest in this batch. Gigabit reaches 62.5% (cable networks, no full-fibre). Superfast is broadly available at 83.9%, though the spread is telling: 62.5% access 300+ Mbps, 21.3% sit in the 30-300 superfast band, and 8.4% fall below 10 Mbps. Below-USO premises account for 2.3%. LL53's scale and rural character mean cable investment concentrates in major settlements (Blaenau Ffestiniog area), leaving dispersed farmland and mountain hamlets on copper or basic wireless. The 8.4% below-10 Mbps rate affects substantial premises in absolute terms, reflecting the geographic challenges of upland Gwynedd's largest postcode district.
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
2%
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
LL53 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 |
|---|---|---|---|---|
| LL53 5 | 171 | 92% | 0% | 89% |
| LL53 6 | 245 | 90% | 0% | 79% |
| LL53 7 | 195 | 87% | 0% | 35% |
| LL53 8 | 196 | 66% | 0% | 47% |
All LL53 5 postcodes (171)
All LL53 6 postcodes (245)
All LL53 7 postcodes (195)
All LL53 8 postcodes (196)
Best deals
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Living in Gwynedd
LL53 exemplifies scale and variance: the largest district in Gwynedd by postcode count, it balances cable gigabit in core areas against a significant slow-speed periphery.
Remote worker score
51/100
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
LL53 broadband FAQs
Why is gigabit uneven across LL53's 807 postcodes?
Cable deployment prioritises higher-density settlements, leaving dispersed rural areas dependent on legacy copper and wireless backhaul.
How significant is the 8.4% below-10 Mbps problem in LL53?
Substantial in absolute terms. 8.4% of 807 postcodes represents roughly 68 problem locations, many in upland Gwynedd terrain.
Is LL53 the largest postcode district in this batch?
Yes; at 807 postcodes, LL53 dwarfs other LL codes.
What's the connectivity guarantee in LL53?
83.9% reach superfast as a floor, but 8.4% fall short, requiring verification before relocating.
Neighbouring districts
Check your exact postcode
Every postcode in LL53 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