LL57 4HW

Arllechwedd · Gwynedd · Wales

Updated September 2026

Compare this postcode

Location overview

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Local authority
Gwynedd
Constituency
Bangor Aberconwy
Postcode district
LL57
Postcode sector
LL57 4

Nearby postcodes

Nearby postcode distances
Postcode Distance
LL57 4FL 894 m
LL57 4HN 968 m
LL57 1HQ 979 m
LL57 1PZ 1.1 km
LL57 1SE 1.2 km
Complete postcode fields and official codes
Postcode
LL57 4HW
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
LL
Postcode district
LL57
Postcode sector
LL57 4
Latitude
53.231130
Longitude
-4.095721
British National Grid easting
260,210
British National Grid northing
372,503

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Gwynedd · W06000002
Parish or community
W04000073
Westminster constituency
Bangor Aberconwy · W07000083
Output area
W00000255
Lower layer super output area
Gwynedd 003A · W01000050
Middle layer super output area
Gwynedd 003 · W02000012

Postcode source versions

Explore LL57

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
14
Primary
0
Secondary
0
  1. Ysgol Glancegin

    Welsh establishment

    1.6 km
  2. Ysgol Llandygai

    Welsh establishment

    1.6 km
  3. Ysgol Gynradd Hirael

    Welsh establishment

    1.8 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
323
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 115
  • Anti social behaviour 58
  • Public order 37
  • Drugs 32
  • Criminal damage and arson 29

Census 2021

Population and age profile

Postcode residents
22

12 female, 10 male

Postcode households
13
Residents per household
1.7
LL57 4 residents
5,821

Age bands in LL57 4

Wider postcode sector
Age 0 to 14
16.1%

958 residents

Age 15 to 24
14%

833 residents

Age 25 to 44
25.3%

1,504 residents

Age 45 to 64
26.6%

1,583 residents

Age 65 and over
17.9%

1,067 residents

This postcode contained 0.4% of the sector's usual residents on Census Day. The age profile describes the wider LL57 4 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+
90%
Ultrafast, 300 Mbit/s+
90%
Gigabit-capable
90%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
90%

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

5

within 5 km straight-line

  • GLANFA

    ORME ROAD, BANGOR, LL57 1AY

    ODS code W94040

    1.7 km

  • BRON DERW MEDICAL CENTRE

    GLYNNE ROAD, BANGOR, LL57 1AH

    ODS code W94034

    1.7 km

  • BODNANT SURGERY

    MENAI AVENUE, BANGOR, LL57 2HH

    ODS code W94010

    2.9 km

  • THE HEALTH CENTRE

    BEAUMARIS LIBRARY, BEAUMARIS, LL58 8AL

    ODS code W94009

    3.7 km

  • UPCC AT YSBYTY GWYNEDD

    UPCC AT YSBYTY GWYNEDO, PENRHOSGARNEDD, BANGOR, LL57 2PW

    ODS code W00191

    4.9 km

Nearby transport

  • Glan Traeth

    BCT · Bangor

    0.7 miles
  • Llandegai Road

    BCT · Maesgeirchen

    0.7 miles
  • Maesgeirchen Entrance

    BCT · Maesgeirchen

    0.7 miles
  • Amlosgfa

    BCT · Llandygai

    0.8 miles
  • Llandygai Industrial Estate

    BCT · Llandygai

    0.9 miles

Evidence in context

Schools

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

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

Recorded crime

323 published events cover 12 months, averaging 26.917 events per published month. The largest recorded category is Violence and sexual offences with 115 events.

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