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LL55 4SA

Cwm-y-glo · Gwynedd · Wales

Updated September 2026

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Location overview

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Post town
Caernarfon
Ward
Cwm-y-glo
Local authority
Gwynedd
Constituency
Dwyfor Meirionnydd
Postcode district
LL55
Postcode sector
LL55 4

Nearby postcodes

Nearby postcode distances
Postcode Distance
LL55 4RY 545 m
LL55 4HX 742 m
LL55 4SB 840 m
LL55 4SD 847 m
LL55 4EJ 970 m
Complete postcode fields and official codes
Postcode
LL55 4SA
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
LL
Postcode district
LL55
Postcode sector
LL55 4
Latitude
53.126234
Longitude
-4.196108
British National Grid easting
253,152
British National Grid northing
361,037

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Gwynedd · W06000002
Electoral ward
Cwm-y-glo · W05001523
Parish or community
W04000086
Westminster constituency
Dwyfor Meirionnydd · W07000096
Output area
W00000315
Lower layer super output area
Gwynedd 004B · W01000053
Middle layer super output area
Gwynedd 004 · W02000013

Postcode source versions

Explore LL55

Use the wider postcode district to compare the same evidence across more locations.

Property

At this postcode

View all property records
11 recorded sales at this postcode
Address Date Price
Tan-Y-Merddyn, Ceunant, Caernarfon, LL55 4SA 31 July 2024 £410,000
Bryn Glas, Ceunant, Caernarfon, LL55 4SA 18 November 2020 £325,000
Cil Haul, Ceunant, Caernarfon, LL55 4SA 29 September 2016 £227,555

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
12
Primary
0
Secondary
0

  1. Ysgol Waunfawr

    Welsh establishment

    1.6 km

  2. Ysgol Llanrug

    Welsh establishment

    2.4 km

  3. Ysgol Brynrefail

    Welsh establishment

    2.7 km

Census 2021

Population and age profile

Postcode residents
34

17 female, 17 male

Postcode households
12
Residents per household
2.8
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

This postcode contained 0.5% of the sector's usual residents on Census Day. The age profile describes the wider LL55 4 sector, not people in this individual postcode.

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

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+
30.8%
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
7.7%
Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

NHS ODS

GP practices

2

within 5 km

  • LIVERPOOL HOUSE

    WAUNFAWR, CAERNARFON, LL55 4YY

    ODS code W94039

    1.8 km

  • THE SURGERY

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

    ODS code W94017

    4.8 km

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Tan-y-ffordd

    BCT · Ceunant

    0.1 miles

  • Tan-y-ffordd

    BCT · Ceunant

    0.1 miles

  • Hafodlas

    BCT · Ceunant

    0.6 miles

  • Waenfawr Crossroads Upper

    BCT · Waunfawr

    0.7 miles

  • Gate House

    BCT · Ceunant

    0.7 miles

Evidence in context

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Property market

Recorded sales

The five-year median is £410,000 from 1 recorded sale in LL55 4SA. 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

Published establishments

12 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Waunfawr is the nearest published school at 1.0 miles.

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