LL57 postcode area guide — Gwynedd
House prices, crime, broadband speeds, mobile signal, schools and demographics for the LL57 postcode district in Gwynedd — every official dataset on one page.
Check any UK postcode
Where is LL57?
Broadband & internet speeds in LL57
Good coverage
Superfast (30Mb+)
92.8%
Ultrafast (300Mb+)
38.6%
Gigabit-capable
35.2%
Below USO (10Mb)
0.7%
Broadband availability in the LL57 postcode district (Gwynedd) is Good — superfast broadband reaches most premises. Across the 890 postcodes Ofcom measures in LL57, superfast broadband (30 Mbit/s or faster) reaches 92.8% of premises and gigabit-capable lines are available to 35.2%.
Around 0.7% of premises in LL57 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 LL57
| Postcode | Superfast | Gigabit |
|---|---|---|
| LL57 1AA | 33.3% | 33.3% |
| LL57 1AB | 100% | 0% |
| LL57 1AD | 100% | 0% |
| LL57 1AG | 100% | 0% |
| LL57 1AH | 100% | 92.9% |
| LL57 1AJ | 100% | 0% |
| LL57 1AL | 100% | 88.9% |
| LL57 1AN | 100% | 7.1% |
| LL57 1AP | 100% | 0% |
| LL57 1AQ | 100% | 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 LL57
Police recorded 20 incidents within about a mile of the centre of LL57 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Public order | 8 | 40.0% |
| Violence & sexual offences | 4 | 20.0% |
| Anti-social behaviour | 3 | 15.0% |
| Criminal damage & arson | 3 | 15.0% |
| Drugs | 1 | 5.0% |
| Shoplifting | 1 | 5.0% |
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 LL57
Based on 238 sales registered with HM Land Registry in the last 12 months, the median sold price in LL57 is £189,500, up 8.3% on the previous year (£175,000).
Detached
£350,000
37 sales
Semi-detached
£225,000
60 sales
Terraced
£148,000
109 sales
Flat / maisonette
£106,000
11 sales
Latest recorded sales in LL57
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 19 May 2026 | £75,000 | Terraced | Trem Elidir | LL57 2UF |
| 11 May 2026 | £51,000 | Terraced | Holyhead Road | LL57 2EU |
| 1 May 2026 | £175,000 | Other | Ffordd Y Llyn | LL57 4DF |
| 29 Apr 2026 | £100,000 | Terraced | Deiniol Road | LL57 2UR |
| 28 Apr 2026 | £90,000 | Terraced | Hill Street | LL57 2HA |
| 27 Apr 2026 | £90,000 | Other | Hill Street | LL57 2HA |
| 23 Apr 2026 | £225,000 | Semi-detached | Blaen Y Wawr | LL57 4TR |
| 20 Apr 2026 | £144,000 | Terraced | Glynne Road | LL57 1AH |
| 17 Apr 2026 | £750,000 | Semi-detached | Siliwen Road | LL57 2BH |
| 17 Apr 2026 | £140,000 | Terraced | Caernarfon Road | LL57 4SG |
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 LL57
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Ysgol Friars | Not applicable | — | — | LL57 2LN |
| Ysgol Tregarth | Not applicable | — | — | LL57 4PG |
| Ysgol Cae Top | Not applicable | — | — | LL57 2GZ |
| Ysgol Ein Harglwyddes | Not applicable | — | — | LL57 2UT |
| Ysgol Dyffryn Ogwen Bethesda | Not applicable | — | — | LL57 3NN |
| St Gerards School Trust | Not applicable | — | — | LL57 2EL |
| Bangor Independent School | Not applicable | — | — | LL57 1DT |
| Ysgol Llandygai | Not applicable | — | — | LL57 4HU |
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 LL57
307 rated food businesses operate in LL57. 253 hold the top rating of 5, 15 are rated 4, and 7 are rated 2 or below.
Among the 5-rated: 1884 Restaurant & Bar Management Centre, Abbey Road Centre Co.Ltd., Aber Falls Bottling Hall, Academy Bar, Academy Shop.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in LL57
From a sample of 108 Energy Performance Certificates across 10 LL57 postcodes, the most common rating is band C (average band D). 33% of sampled homes are rated C or better.
Band B
3%
Band C
31%
Band D
29%
Band E
20%
Band F
13%
Band G
5%
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 LL57 typically use:
Had a call from an unknown number? Use our free UK phone number checker to see who called.
What's it like living in LL57?
Be the first to rate LL57 (Gwynedd).
How would you rate living in LL57 (Gwynedd)?
Moving to LL57? Sort your connectivity first
We arrange broadband, full-fibre, leased lines, VoIP and business mobiles across Gwynedd — free, no-obligation quote.
Postcodes in LL57
Neighbouring districts
All Llandudno (LL) postcode districts ›
Frequently asked questions
Where is the LL57 postcode?
How much do houses cost in LL57?
Is LL57 a safe area?
What broadband can I get in LL57?
Who lives in LL57?
How energy efficient are homes in LL57?
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.