Property market
The five-year median is £430,000 from 1 recorded sale in LL55 4UN. 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.
LL55 4UN
Llanberis · Gwynedd · Wales
Updated September 2026
Compare this postcodeLocation overview
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- Post town
- Caernarfon
- Ward
- Llanberis
- Local authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd
- Postcode district
- LL55
- Postcode sector
- LL55 4
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- LL55 4UN
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- LL
- Postcode district
- LL55
- Postcode sector
- LL55 4
- Latitude
- 53.107324
- Longitude
- -4.084196
- British National Grid easting
- 260,578
- British National Grid northing
- 358,710
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Gwynedd · W06000002
- Electoral ward
- Llanberis · W05001544
- Parish or community
- W04000069
- Westminster constituency
- Dwyfor Meirionnydd · W07000096
- Output area
- W00000413
- Lower layer super output area
- Gwynedd 005B · W01000081
- Middle layer super output area
- Gwynedd 005 · W02000014
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 LL55
Property
5 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| Gardda, Nant Peris, Caernarfon, LL55 4UN | 20 December 2024 | £430,000 |
| Ceunant Farm, Nant Peris, Caernarfon, LL55 4UN | 23 July 2020 | £80,000 |
| Llwyn Bedw, Nant Peris, Caernarfon, LL55 4UN | 18 December 2013 | £395,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 1
- Primary
- 0
- Secondary
- 0
- 3.2 km
Ysgol Dolbadarn
Welsh establishment
Recorded crime
Within 1 mile of this postcode
- Published events
- 4
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 2
- Other theft 1
- Anti social behaviour 1
Census 2021
Population and age profile
- Postcode residents
- 13
- Postcode households
- 8
- Residents per household
- 1.6
- LL55 4 residents
- 6,211
7 female, 6 male
Age bands in LL55 4
Wider postcode sector- Age 0 to 14
- 16.3%
- Age 15 to 24
- 10.4%
- Age 25 to 44
- 23.7%
- Age 45 to 64
- 27.8%
- Age 65 and over
- 21.8%
1,056 residents
674 residents
1,529 residents
1,796 residents
1,410 residents
This postcode contained 0.2% of the sector's usual residents on Census Day. The age profile describes the wider LL55 4 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+
- 92.9%
- Ultrafast, 100 Mbit/s+
- 92.9%
- Ultrafast, 300 Mbit/s+
- 92.9%
- Gigabit-capable
- 92.9%
- Unable to receive decent fixed or FWA broadband
- 7.1%
- Next Generation Access
- 92.9%
- 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
THE SURGERY
LLANBERIS SURGERY, HIGH STREET, LLANBERIS, CAERNARFON, LL55 4SU
ODS code W94017
3.0 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
- 0.2 miles
Vaynol Arms
BCT · Llanberis
- 0.2 miles
St Peris` Church
BCT · Llanberis
- 0.3 miles
Maes Parcio Car Park
BCT · Llanberis
- 0.9 miles
Cae Perthi
BCT · Gwastadnant
- 0.9 miles
Cae Perthi
BCT · Gwastadnant
Evidence in context
Schools
1 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Dolbadarn is the nearest published school at 2.0 miles.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
4 published events cover 12 months, averaging 0.333 events per published month. The largest recorded category is Violence and sexual offences with 2 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.