LL57 3LG

Arllechwedd · Gwynedd · Wales

Updated September 2026

Compare this postcode

Location overview

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Post town
Bangor
Local authority
Gwynedd
Constituency
Bangor Aberconwy
Postcode district
LL57
Postcode sector
LL57 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
LL57 3LL 704 m
LL57 3LE 1.1 km
LL57 3LB 1.1 km
LL57 3LA 1.1 km
LL57 3LH 1.2 km
Complete postcode fields and official codes
Postcode
LL57 3LG
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
LL
Postcode district
LL57
Postcode sector
LL57 3
Latitude
53.204289
Longitude
-4.050507
British National Grid easting
263,142
British National Grid northing
369,430

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Gwynedd · W06000002
Parish or community
W04000082
Westminster constituency
Bangor Aberconwy · W07000083
Output area
W00000258
Lower layer super output area
Gwynedd 003A · W01000050
Middle layer super output area
Gwynedd 003 · W02000012

Postcode source versions

Explore LL57

3 recorded sales at this postcode
Address Date Price
Bryn Farm, Llanllechid, Bangor, LL57 3LG 29 January 2021 £390,000
Bryn Hall, Llanllechid, Bangor, LL57 3LG 3 December 2015 £309,000
Brynhafodywern, Llanllechid, Bangor, LL57 3LG 21 October 1999 £37,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
7
Primary
0
Secondary
0
  1. Ysgol Gynradd Llanllechid

    Welsh establishment

    2.0 km
  2. Ysgol Dyffryn Ogwen Bethesda

    Welsh establishment

    2.6 km
  3. Ysgol Pen-y-bryn

    Welsh establishment

    2.7 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
28
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 15
  • Anti social behaviour 6
  • Public order 5
  • Bicycle theft 1
  • Criminal damage and arson 1

Census 2021

Population and age profile

Postcode residents
17

9 female, 8 male

Postcode households
5
Residents per household
3.4
LL57 3 residents
5,563

Age bands in LL57 3

Wider postcode sector
Age 0 to 14
17.8%

989 residents

Age 15 to 24
11.3%

627 residents

Age 25 to 44
25%

1,390 residents

Age 45 to 64
28.2%

1,570 residents

Age 65 and over
17.8%

989 residents

This postcode contained 0.3% of the sector's usual residents on Census Day. The age profile describes the wider LL57 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+
20%
Ultrafast, 100 Mbit/s+
20%
Ultrafast, 300 Mbit/s+
20%
Gigabit-capable
20%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
100%

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

1

within 5 km straight-line

  • CANOLFAN FEDDYGOL YR HEN

    STATION ROAD, BETHESDA, BANGOR, LL57 3NE

    ODS code W94028

    2.9 km

Nearby transport

  • St Llechid`s Church

    BCT · Llanllechid

    0.7 miles
  • St Llechid`s Church

    BCT · Llanllechid

    0.7 miles
  • Sgwar

    BCT · Rachub

    1.0 miles
  • Sgwar

    BCT · Rachub

    1.0 miles
  • Capel Bethel

    BCT · Rachub

    1.1 miles

Evidence in context

Schools

7 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Gynradd Llanllechid is the nearest published school at 1.2 miles.

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

Recorded crime

28 published events cover 12 months, averaging 2.333 events per published month. The largest recorded category is Violence and sexual offences with 15 events.

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