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LL55 1DU

Menai · Gwynedd · Wales

Updated September 2026

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Location overview

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Post town
Caernarfon
Ward
Menai
Local authority
Gwynedd
Constituency
Dwyfor Meirionnydd
Postcode district
LL55
Postcode sector
LL55 1

Nearby postcodes

Nearby postcode distances
Postcode Distance
LL55 1EB 133 m
LL55 1DT 145 m
LL55 1DY 150 m
LL55 1ED 158 m
LL55 1EA 188 m
Complete postcode fields and official codes
Postcode
LL55 1DU
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
LL
Postcode district
LL55
Postcode sector
LL55 1
Latitude
53.147653
Longitude
-4.258395
British National Grid easting
249,060
British National Grid northing
363,549

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Gwynedd · W06000002
Electoral ward
Menai · W05001551
Parish or community
W04000056
Westminster constituency
Dwyfor Meirionnydd · W07000096
Output area
W00000474
Lower layer super output area
Gwynedd 006B · W01000093
Middle layer super output area
Gwynedd 006 · W02000015

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
8 recorded sales at this postcode
Address Date Price
Glaslyn, Bethel Road, Caernarfon, LL55 1DU 6 June 2022 £285,000
Gwenmon, Bethel Road, Caernarfon, LL55 1DU 24 January 2017 £275,000
Noddfa, Bethel Road, Caernarfon, LL55 1DU 30 March 2016 £182,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
11
Primary
0
Secondary
0

  1. Ysgol Y Gelli

    Welsh establishment

    141 m

  2. Ysgol Syr Hugh Owen

    Welsh establishment

    407 m

  3. Ysgol Gynradd Maesincla

    Welsh establishment

    678 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
1,424
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 562
  • Anti social behaviour 220
  • Shoplifting 160
  • Criminal damage and arson 130
  • Public order 100

Census 2021

Population and age profile

Postcode residents
29

15 female, 14 male

Postcode households
13
Residents per household
2.2
LL55 1 residents
5,346

Age bands in LL55 1

Wider postcode sector
Age 0 to 14
16.5%

894 residents

Age 15 to 24
10%

543 residents

Age 25 to 44
23.7%

1,282 residents

Age 45 to 64
25.8%

1,400 residents

Age 65 and over
24%

1,298 residents

This postcode contained 0.5% of the sector's usual residents on Census Day. The age profile describes the wider LL55 1 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+
77.8%
Ultrafast, 300 Mbit/s+
77.8%
Gigabit-capable
77.8%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
88.9%
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

4

within 5 km

  • PRIMARY CARE CS

    ERYLDON, CAMPBELL ROAD, CAERNARFON, LL55 1HU

    ODS code W00209

    552 m

  • MEDDYGFA HAFAN

    DOC FICTORIA, CAERNARFON, LL55 1TH

    ODS code W94030

    1.2 km

  • FELINHELI&PORTHAETHWY SU

    ROWEN, Y FELINHELI, LL56 4RX

    ODS code W94027

    4.6 km

  • THE HEALTH CENTRE

    DWYRAN, LLANFAIRPWLLGWYNGYLL, LL61 6YD

    ODS code W94015

    4.6 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

  • Ffordd Bethel

    BCT · Waterloo Port

    0.1 miles

  • Arfon Leisure Centre

    BCT · Caernarfon

    0.1 miles

  • Cae Bold

    BCT · Caernarfon

    0.1 miles

  • Ffordd Bethel

    BCT · Caernarfon

    0.1 miles

  • Arfon Leisure Centre

    BCT · Caernarfon

    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 £285,000 from 1 recorded sale in LL55 1DU. 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

11 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Y Gelli is the nearest published school at 141 m.

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

Recorded crime

Published police records

1,424 published events cover 12 months, averaging 118.667 events per published month. The largest recorded category is Violence and sexual offences with 562 events.

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