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LL55 3EA

Deiniolen · Gwynedd · Wales

Updated September 2026

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Location overview

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Post town
Caernarfon
Ward
Deiniolen
Local authority
Gwynedd
Constituency
Dwyfor Meirionnydd
Postcode district
LL55
Postcode sector
LL55 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
LL55 3DH 49 m
LL55 3LS 54 m
LL55 3EQ 71 m
LL55 3EJ 80 m
LL55 3EZ 81 m
Complete postcode fields and official codes
Postcode
LL55 3EA
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
LL
Postcode district
LL55
Postcode sector
LL55 3
Latitude
53.145505
Longitude
-4.131070
British National Grid easting
257,567
British National Grid northing
363,049

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Gwynedd · W06000002
Electoral ward
Deiniolen · W05001526
Parish or community
W04000070
Westminster constituency
Dwyfor Meirionnydd · W07000096
Output area
W00000322
Lower layer super output area
Gwynedd 005A · W01000063
Middle layer super output area
Gwynedd 005 · W02000014

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
10 recorded sales at this postcode
Address Date Price
Bryncelyn, 1, Deiniolen, Caernarfon, LL55 3EA 2 December 2022 £232,000
Anneddwen, Deiniolen, Caernarfon, LL55 3EA 14 June 2017 £110,000
Bryncelyn, 3, Deiniolen, Caernarfon, LL55 3EA 9 September 2015 £115,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
7
Primary
0
Secondary
0

  1. Ysgol Gwaun Gynfi

    Welsh establishment

    284 m

  2. Ysgol Gymuned Penisarwaun

    Welsh establishment

    2.2 km

  3. Ysgol Dolbadarn

    Welsh establishment

    3.1 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
104
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 65
  • Anti social behaviour 9
  • Other theft 6
  • Public order 6
  • Criminal damage and arson 6

Census 2021

Population and age profile

Postcode residents
19

9 female, 10 male

Postcode households
9
Residents per household
2.1
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 0.6% of the sector's usual residents on Census Day. The age profile describes the wider LL55 3 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+
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
77.8%
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

1

within 5 km

  • THE SURGERY

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

    ODS code W94017

    3.0 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

  • Pentre Helen

    BCT · Deiniolen

    0.0 miles

  • Pentre Helen

    BCT · Deiniolen

    0.0 miles

  • Capel Maes-y-dref

    BCT · Clwt-y-bont

    0.2 miles

  • Capel Maes-y-dref

    BCT · Deiniolen

    0.2 miles

  • Ysgol Gwaun Gynfi

    BCT · Deiniolen

    0.2 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 £232,000 from 1 recorded sale in LL55 3EA. 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

7 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Gwaun Gynfi is the nearest published school at 284 m.

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

Recorded crime

Published police records

104 published events cover 12 months, averaging 8.667 events per published month. The largest recorded category is Violence and sexual offences with 65 events.

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