LL23 postcode area guide — Gwynedd
House prices, crime, broadband speeds, mobile signal, schools and demographics for the LL23 postcode district in Gwynedd — every official dataset on one page.
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Where is LL23?
Broadband & internet speeds in LL23
Mixed coverage
Superfast (30Mb+)
73.4%
Ultrafast (300Mb+)
35.1%
Gigabit-capable
35.1%
Below USO (10Mb)
4.3%
Broadband availability in the LL23 postcode district (Gwynedd) is Mixed — superfast is available to many but not all premises. Across the 199 postcodes Ofcom measures in LL23, superfast broadband (30 Mbit/s or faster) reaches 73.4% of premises and gigabit-capable lines are available to 35.1%.
Around 4.3% of premises in LL23 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 LL23
| Postcode | Superfast | Gigabit |
|---|---|---|
| LL23 7AA | 100% | 0% |
| LL23 7AB | 100% | 0% |
| LL23 7AD | 100% | 0% |
| LL23 7AE | 97.4% | 0% |
| LL23 7AF | 100% | 0% |
| LL23 7AG | 100% | 0% |
| LL23 7AH | 100% | 0% |
| LL23 7AJ | 100% | 0% |
| LL23 7AL | 100% | 0% |
| LL23 7AN | 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 LL23
Police recorded 19 incidents within about a mile of the centre of LL23 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Anti-social behaviour | 6 | 31.6% |
| Violence & sexual offences | 6 | 31.6% |
| Criminal damage & arson | 3 | 15.8% |
| Shoplifting | 3 | 15.8% |
| Other crime | 1 | 5.3% |
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 LL23
Based on 22 sales registered with HM Land Registry in the last 12 months, the median sold price in LL23 is £150,000, down 46.6% on the previous year (£281,000).
Detached
£179,000
6 sales
Terraced
£130,000
12 sales
Latest recorded sales in LL23
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 24 Feb 2026 | £222,000 | Detached | Minafon | LL23 7EY |
| 30 Jan 2026 | £179,000 | Detached | LL23 7UB | |
| 19 Dec 2025 | £315,000 | Terraced | High Street | LL23 7AD |
| 19 Dec 2025 | £105,000 | Terraced | Arenig Street | LL23 7AH |
| 15 Dec 2025 | £105,000 | Terraced | Ffrydan Road | LL23 7RT |
| 12 Dec 2025 | £150,000 | Detached | Mawnog Fach | LL23 7YY |
| 5 Dec 2025 | £243,000 | Terraced | Tegid Street | LL23 7EN |
| 24 Nov 2025 | £480,000 | Other | LL23 7UF | |
| 17 Nov 2025 | £175,000 | Terraced | Station Road | LL23 7NG |
| 12 Nov 2025 | £150,000 | Detached | High Street | LL23 7AD |
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 LL23
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Ysgol O.M. Edwards | Not applicable | — | — | LL23 7UB |
| Ysgol Bro Tryweryn | Not applicable | — | — | LL23 7NT |
| Ysgol Ffridd y LLyn | Not applicable | — | — | LL23 7HE |
| Ysgol Godre'r Berwyn | Not applicable | — | — | LL23 7RU |
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 LL23
78 rated food businesses operate in LL23. 70 hold the top rating of 5, 5 are rated 4, and 1 are rated 2 or below.
Among the 5-rated: Aran Hufen Ia Bike, Aran Hufen Ia Ltd, Arlwyo Allanol Nia Cyfnod, Bailey's Snack Bar, Bala Camping & Caravanning Club Site.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in LL23
From a sample of 78 Energy Performance Certificates across 12 LL23 postcodes, the most common rating is band D (average band E). 15% of sampled homes are rated C or better.
Band A
8%
Band B
1%
Band C
6%
Band D
29%
Band E
18%
Band F
18%
Band G
19%
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 LL23 typically use:
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What's it like living in LL23?
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Moving to LL23? Sort your connectivity first
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Postcodes in LL23
Neighbouring districts
All Llandudno (LL) postcode districts ›
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.