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LL55 3NP

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 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
LL55 4EE 234 m
LL55 3NR 249 m
LL55 3NY 342 m
LL55 3NT 347 m
LL55 3PA 403 m
Complete postcode fields and official codes
Postcode
LL55 3NP
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
LL
Postcode district
LL55
Postcode sector
LL55 3
Latitude
53.139996
Longitude
-4.154406
British National Grid easting
255,988
British National Grid northing
362,483

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Gwynedd · W06000002
Electoral ward
Cwm-y-glo · W05001523
Parish or community
W04000070
Westminster constituency
Dwyfor Meirionnydd · W07000096
Output area
W00000506
Lower layer super output area
Gwynedd 005C · W01000099
Middle layer super output area
Gwynedd 005 · W02000014

Postcode source versions

Explore LL55

Property

View all property records
5 recorded sales at this postcode
Address Date Price
Rhianfa, Brynrefail, Caernarfon, LL55 3NP 6 May 2021 £328,000
Rhianfa, Brynrefail, Caernarfon, LL55 3NP 20 December 2017 £250,000
Monfa Cottage, Brynrefail, Caernarfon, LL55 3NP 19 October 2010 £155,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
8
Primary
0
Secondary
0

  1. Ysgol Gymuned Penisarwaun

    Welsh establishment

    1.5 km

  2. Ysgol Gwaun Gynfi

    Welsh establishment

    1.9 km

  3. Ysgol Llanrug

    Welsh establishment

    2.6 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
67
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 34
  • Public order 7
  • Anti social behaviour 6
  • Burglary 5
  • Other theft 5

Census 2021

Population and age profile

Postcode residents
9

4 female, 5 male

Postcode households
5
Residents per household
1.8
LL55 3 residents
2,998

Age bands in LL55 3

Wider postcode sector
Age 0 to 14
16.2%

495 residents

Age 15 to 24
11.6%

355 residents

Age 25 to 44
22.4%

682 residents

Age 45 to 64
30%

914 residents

Age 65 and over
19.8%

602 residents

This postcode contained 0.3% of the sector's usual residents on Census Day. The age profile describes the wider LL55 3 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+
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

2

within 5 km

  • THE SURGERY

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

    ODS code W94017

    3.1 km

  • LIVERPOOL HOUSE

    WAUNFAWR, CAERNARFON, LL55 4YY

    ODS code W94039

    4.7 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 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Bryn Parc

    BCT · Brynrefail

    0.1 miles

  • Bryn Parc

    BCT · Brynrefail

    0.1 miles

  • Pen y llyn

    BCT · Brynrefail

    0.1 miles

  • Pen y llyn

    BCT · Brynrefail

    0.1 miles

  • Caban

    BCT · Brynrefail

    0.2 miles

Evidence in context

Schools

8 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Gymuned Penisarwaun is the nearest published school at 0.9 miles.

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

Recorded crime

67 published events cover 12 months, averaging 5.583 events per published month. The largest recorded category is Violence and sexual offences with 34 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.