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LL55 4SS

Llanberis · Gwynedd · Wales

Updated September 2026

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Location 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

Nearby postcode distances
Postcode Distance
LL55 4UW 1.1 km
LL55 4TG 1.3 km
LL55 4TH 1.4 km
LL55 4SR 1.4 km
LL55 4TW 1.5 km
Complete postcode fields and official codes
Postcode
LL55 4SS
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
LL
Postcode district
LL55
Postcode sector
LL55 4
Latitude
53.100403
Longitude
-4.126793
British National Grid easting
257,704
British National Grid northing
358,024

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

Explore LL55

Property

View all property records
2 recorded sales at this postcode
Address Date Price
Tynyraelgerth, Llanberis, Caernarfon, LL55 4SS 1 November 2023 £240,000
Tynyraelgerth, Llanberis, Caernarfon, LL55 4SS 6 December 2002 £75,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
1
Primary
0
Secondary
0

  1. Ysgol Dolbadarn

    Welsh establishment

    1.9 km

Census 2021

Population and age profile

Postcode residents
Not supplied
Postcode households
Not supplied
Residents per household
Not available
LL55 4 residents
6,211

Age bands in LL55 4

Wider postcode sector
Age 0 to 14
16.3%

1,056 residents

Age 15 to 24
10.4%

674 residents

Age 25 to 44
23.7%

1,529 residents

Age 45 to 64
27.8%

1,796 residents

Age 65 and over
21.8%

1,410 residents

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+
0%
Ultrafast, 100 Mbit/s+
0%
Ultrafast, 300 Mbit/s+
0%
Gigabit-capable
0%
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 straight-line

  • THE SURGERY

    LLANBERIS SURGERY, HIGH STREET, LLANBERIS, CAERNARFON, LL55 4SU

    ODS code W94017

    2.0 km

Nearby transport

  • Rhes Fictoria

    BCT · Llanberis

    1.0 miles

  • Rhes Fictoria

    BCT · Llanberis

    1.0 miles

  • Llanberis (Snowdon Mountain Railway)

    MET · Llanberis

    1.1 miles

  • Capel Jerusalem

    BCT · Llanberis

    1.1 miles

  • Maes Padarn

    BCT · Llanberis

    1.2 miles

Evidence in context

Property market

The five-year median is £240,000 from 1 recorded sale in LL55 4SS. 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.

Schools

1 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Dolbadarn is the nearest published school at 1.2 miles.

Counts describe active establishment records. They do not assess admissions, catchments or quality.