Property market
The five-year median is £136,000 from 2 recorded sales in LL54 6SS. This is a recorded-sale statistic, not a current valuation.
The latest UK House Price Index average for Gwynedd is £206,665 in June 2026, up 5.7% year on year.
LL54 6SS
Llanllyfni · Gwynedd · Wales
Updated September 2026
Compare this postcodeLocation overview
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- Post town
- Caernarfon
- Ward
- Llanllyfni
- Local authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd
- Postcode district
- LL54
- Postcode sector
- LL54 6
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- LL54 6SS
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- LL
- Postcode district
- LL54
- Postcode sector
- LL54 6
- Latitude
- 53.041708
- Longitude
- -4.285001
- British National Grid easting
- 246,905
- British National Grid northing
- 351,822
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Gwynedd · W06000002
- Electoral ward
- Llanllyfni · W05001546
- Parish or community
- W04000083
- Westminster constituency
- Dwyfor Meirionnydd · W07000096
- Output area
- W00000437
- Lower layer super output area
- Gwynedd 008B · W01000086
- Middle layer super output area
- Gwynedd 008 · W02000017
Postcode source versions
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore LL54
Property
11 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| 28, Bryn Rhedyw, Llanllyfni, Caernarfon, LL54 6SS | 21 October 2025 | £135,000 |
| 10, Bryn Rhedyw, Llanllyfni, Caernarfon, LL54 6SS | 16 December 2022 | £137,000 |
| 3, Bryn Rhedyw, Llanllyfni, Caernarfon, LL54 6SS | 14 May 2021 | £110,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 6
- Primary
- 0
- Secondary
- 0
- 149 m
Ysgol Gynradd Llanllyfni
Welsh establishment
- 1.5 km
Ysgol Dyffryn Nantlle
Welsh establishment
- 1.5 km
Ysgol Bro Lleu
Welsh establishment
Recorded crime
Within 1 mile of this postcode
- Published events
- 203
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 104
- Anti social behaviour 41
- Criminal damage and arson 23
- Public order 11
- Other theft 8
Census 2021
Population and age profile
- Postcode residents
- 97
- Postcode households
- 37
- Residents per household
- 2.6
- LL54 6 residents
- 4,195
58 female, 39 male
Age bands in LL54 6
Wider postcode sector- Age 0 to 14
- 18.7%
- Age 15 to 24
- 10.7%
- Age 25 to 44
- 21.7%
- Age 45 to 64
- 27.5%
- Age 65 and over
- 21.4%
765 residents
437 residents
890 residents
1,127 residents
878 residents
This postcode contained 2.3% of the sector's usual residents on Census Day. The age profile describes the wider LL54 6 sector, not people in this individual postcode.
Small counts are adjusted for privacy, so totals can differ slightly between Census tables.
Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.
Fixed broadband coverage
Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.
- Superfast, 30 Mbit/s+
- 100%
- Ultrafast, 100 Mbit/s+
- 100%
- Ultrafast, 300 Mbit/s+
- 100%
- Gigabit-capable
- 100%
- Unable to receive decent fixed or FWA broadband
- 0%
- Next Generation Access
- 100%
- Decent broadband available from fixed wireless
- 0%
Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.
Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.
GP practices
1
within 5 km
CORWEN HOUSE
MARKET PLACE, PENYGROES, CAERNARFON, LL54 6NN
ODS code W94609
1.3 km
Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.
Source acquired on 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.
Nearby transport
- 0.1 miles
Ysgol Gynradd Llanllyfni
BCT · Llanllyfni
- 0.1 miles
Ysgol Gynradd Llanllyfni
BCT · Llanllyfni
- 0.1 miles
Quarrymen`s Arms
BCT · Llanllyfni
- 0.1 miles
Quarrymen`s Arms
BCT · Llanllyfni
- 0.3 miles
Felin Gerrig
BCT · Llanllyfni
Evidence in context
Schools
6 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Gynradd Llanllyfni is the nearest published school at 149 m.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
203 published events cover 12 months, averaging 16.917 events per published month. The largest recorded category is Violence and sexual offences with 104 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.