LL54 postcode area guide — Gwynedd
House prices, crime, broadband speeds, mobile signal, schools and demographics for the LL54 postcode district in Gwynedd — every official dataset on one page.
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Where is LL54?
Broadband & internet speeds in LL54
Strong coverage
Superfast (30Mb+)
91.3%
Ultrafast (300Mb+)
69.5%
Gigabit-capable
69.5%
Below USO (10Mb)
0.4%
Broadband availability in the LL54 postcode district (Gwynedd) is Strong — superfast is near-universal and gigabit is rolling out. Across the 518 postcodes Ofcom measures in LL54, superfast broadband (30 Mbit/s or faster) reaches 91.3% of premises and gigabit-capable lines are available to 69.5%.
Around 0.4% of premises in LL54 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 LL54
| Postcode | Superfast | Gigabit |
|---|---|---|
| LL54 5AA | 71.4% | 71.4% |
| LL54 5AB | 0% | 0% |
| LL54 5AD | 71.4% | 71.4% |
| LL54 5AE | 88.2% | 88.2% |
| LL54 5AF | 100% | 100% |
| LL54 5AG | 80.8% | 80.8% |
| LL54 5AH | 75% | 75% |
| LL54 5AJ | 100% | 100% |
| LL54 5AL | 62.5% | 62.5% |
| LL54 5AN | 0% | 0% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Gwynedd
Ofcom's coverage model for the wider Gwynedd district (68,440 premises):
4G indoors — all networks
76.8%
4G outdoors — all networks
95.3%
5G outdoors — all networks
—
Voice indoors — all networks
81.4%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in LL54
Police recorded 23 incidents within about a mile of the centre of LL54 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 14 | 60.9% |
| Criminal damage & arson | 3 | 13.0% |
| Shoplifting | 3 | 13.0% |
| Anti-social behaviour | 2 | 8.7% |
| Other theft | 1 | 4.3% |
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).
House prices in LL54
Based on 88 sales registered with HM Land Registry in the last 12 months, the median sold price in LL54 is £160,000, down 8.6% on the previous year (£175,000).
Detached
£257,500
23 sales
Semi-detached
£165,500
17 sales
Terraced
£122,000
40 sales
Latest recorded sales in LL54
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 11 May 2026 | £380,000 | Detached | LL54 7LB | |
| 11 May 2026 | £120,000 | Terraced | Market Place | LL54 6NN |
| 30 Apr 2026 | £130,000 | Semi-detached | LL54 7BD | |
| 28 Apr 2026 | £395,000 | Detached | Ger Y Llan | LL54 5TJ |
| 28 Apr 2026 | £212,000 | Semi-detached | Cefn Dyffryn | LL54 7TQ |
| 27 Apr 2026 | £170,000 | Terraced | Lime Street | LL54 5LR |
| 17 Apr 2026 | £88,000 | Terraced | Dolawen Terrace | LL54 7PT |
| 17 Apr 2026 | £80,000 | Terraced | High Street | LL54 6PL |
| 16 Apr 2026 | £225,000 | Detached | LL54 6LF | |
| 16 Apr 2026 | £195,000 | Detached | Garth Estate | LL54 5ET |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Who lives here? Gwynedd demographics
Census 2021 figures for the wider Gwynedd district (117,393 residents, 51,105 households):
| Age profile | |
|---|---|
| Under 15 | 16.6% |
| 15–29 | 23.3% |
| 30–44 | 15.9% |
| 45–64 | 21% |
| 65+ | 23.2% |
| Housing tenure | |
|---|---|
| Owner-occupied | 65.4% |
| Private rented | 17.6% |
| Social rented | 9.9% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around LL54
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Ysgol Brynaerau | Not applicable | — | — | LL54 5BU |
| Ysgol Gynradd Llanaelhaearn | Not applicable | — | — | LL54 5AL |
| Ysgol Gynradd Llanllyfni | Not applicable | — | — | LL54 6SH |
| Ysgol Baladeulyn | Not applicable | — | — | LL54 6BT |
| Ysgol Gynradd Nebo | Not applicable | — | — | LL54 6EE |
| Ysgol Bro Lleu | Not applicable | — | — | LL54 6RE |
| Ysgol Gynradd Rhosgadfan | Not applicable | — | — | LL54 7EU |
| Y.G. Rhostryfan | Not applicable | — | — | LL54 7LR |
Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.
Food hygiene ratings in LL54
121 rated food businesses operate in LL54. 102 hold the top rating of 5, 8 are rated 4, and 1 are rated 2 or below.
Among the 5-rated: 'Not Only Spaghetti', Age Cymru Gwynedd A Mon, Ann CO75 (Fishing Vessel), Antur Aelhaearn, Auxilium Catering.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in LL54
From a sample of 162 Energy Performance Certificates across 11 LL54 postcodes, the most common rating is band D (average band D). 28% of sampled homes are rated C or better.
Band B
4%
Band C
23%
Band D
37%
Band E
16%
Band F
15%
Band G
4%
Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.
Phone area codes for Gwynedd
Landlines around LL54 typically use:
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What's it like living in LL54?
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Moving to LL54? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Gwynedd — free, no-obligation quote.
Postcodes in LL54
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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.