Property market
The five-year median is £445,000 from 1 recorded sale in LL57 3LX. 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.
LL57 3LX
Arllechwedd · Gwynedd · Wales
Updated September 2026
Compare this postcodeLocation overview
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- Post town
- Bangor
- Ward
- Arllechwedd
- Local authority
- Gwynedd
- Constituency
- Bangor Aberconwy
- Postcode district
- LL57
- Postcode sector
- LL57 3
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- LL57 3LX
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- LL
- Postcode district
- LL57
- Postcode sector
- LL57 3
- Latitude
- 53.155181
- Longitude
- -4.042706
- British National Grid easting
- 263,507
- British National Grid northing
- 363,953
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Gwynedd · W06000002
- Electoral ward
- Arllechwedd · W05001510
- 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
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore LL57
Property
6 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| Tan Y Dderwen, Nant Ffrancon, Bangor, LL57 3LX | 25 November 2022 | £445,000 |
| Pengarreg, 1, Nant Ffrancon, Bangor, LL57 3LX | 17 February 2015 | £275,000 |
| Dol Caradog, Nant Ffrancon, Bangor, LL57 3LX | 18 July 2002 | £120,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 6
- Primary
- 0
- Secondary
- 0
- 2.5 km
Ysgol Abercaseg
Welsh establishment
- 3.0 km
Ysgol Pen-y-bryn
Welsh establishment
- 3.4 km
Ysgol Dyffryn Ogwen Bethesda
Welsh establishment
Census 2021
Population and age profile
- Postcode residents
- 68
- Postcode households
- 10
- Residents per household
- 6.8
- LL57 3 residents
- 5,563
44 female, 24 male
Age bands in LL57 3
Wider postcode sector- Age 0 to 14
- 17.8%
- Age 15 to 24
- 11.3%
- Age 25 to 44
- 25%
- Age 45 to 64
- 28.2%
- Age 65 and over
- 17.8%
989 residents
627 residents
1,390 residents
1,570 residents
989 residents
This postcode contained 1.2% 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+
- 37.5%
- Ultrafast, 100 Mbit/s+
- 37.5%
- Ultrafast, 300 Mbit/s+
- 37.5%
- Gigabit-capable
- 37.5%
- 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
1
within 5 km
CANOLFAN FEDDYGOL YR HEN
STATION ROAD, BETHESDA, BANGOR, LL57 3NE
ODS code W94028
3.3 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 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.
Nearby transport
- 1.4 miles
Bodforis
BCT · Braichmelyn
- 1.4 miles
Bodforis
BCT · Braichmelyn
- 1.4 miles
Gwernydd
BCT · Gerlan
- 1.4 miles
Gwernydd
BCT · Gerlan
- 1.5 miles
Swyddfa'r Post Office
BCT · Gerlan
Evidence in context
Schools
6 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Abercaseg is the nearest published school at 1.6 miles.
Counts describe active establishment records. They do not assess admissions, catchments or quality.