Property market
The five-year median is £317,500 from 4 recorded sales in LL57 4DX. 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 4DX
Tre-garth a Mynydd Llandygái · Gwynedd · Wales
Updated September 2026
Compare this postcodeLocation overview
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- Post town
- Bangor
- Local authority
- Gwynedd
- Constituency
- Bangor Aberconwy
- Postcode district
- LL57
- Postcode sector
- LL57 4
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- LL57 4DX
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- LL
- Postcode district
- LL57
- Postcode sector
- LL57 4
- Latitude
- 53.167542
- Longitude
- -4.094520
- British National Grid easting
- 260,083
- British National Grid northing
- 365,428
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Gwynedd · W06000002
- Electoral ward
- Tre-garth a Mynydd Llandygái · W05001563
- Parish or community
- W04000073
- Westminster constituency
- Bangor Aberconwy · W07000083
- Output area
- W00000598
- Lower layer super output area
- Gwynedd 003E · W01000115
- 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
34 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| 22, Tan Y Bwlch, Mynydd Llandygai, Bangor, LL57 4DX | 11 March 2026 | £150,000 |
| 7, Tan Y Bwlch, Mynydd Llandygai, Bangor, LL57 4DX | 14 October 2025 | £360,000 |
| 10, Tan Y Bwlch, Mynydd Llandygai, Bangor, LL57 4DX | 16 May 2024 | £290,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 9
- Primary
- 0
- Secondary
- 0
- 1.6 km
Ysgol Bodfeurig
Welsh establishment
- 2.6 km
Ysgol Tregarth
Welsh establishment
- 2.6 km
Ysgol Dyffryn Ogwen Bethesda
Welsh establishment
Recorded crime
Within 1 mile of this postcode
- Published events
- 33
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 20
- Anti social behaviour 6
- Criminal damage and arson 4
- Other theft 2
- Burglary 1
Census 2021
Population and age profile
- Postcode residents
- 84
- Postcode households
- 33
- Residents per household
- 2.5
- LL57 4 residents
- 5,821
45 female, 39 male
Age bands in LL57 4
Wider postcode sector- Age 0 to 14
- 16.1%
- Age 15 to 24
- 14%
- Age 25 to 44
- 25.3%
- Age 45 to 64
- 26.6%
- Age 65 and over
- 17.9%
958 residents
833 residents
1,504 residents
1,583 residents
1,067 residents
This postcode contained 1.4% 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+
- 67.6%
- Ultrafast, 300 Mbit/s+
- 67.6%
- Gigabit-capable
- 67.6%
- 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
2.3 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
- 0.2 miles
Mynydd Llandygai
BCT · Mynydd Llandegai
- 0.4 miles
Ar Afon Mynydd Llandygai
BCT · Mynydd Llandegai
- 1.0 miles
Godre'r Parc
BCT · Sling
- 1.0 miles
Godre'r Parc
BCT · Sling
- 1.1 miles
Pont Galedffrwd
BCT · Coed-y-parc
Evidence in context
Schools
9 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Bodfeurig is the nearest published school at 1.0 miles.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
33 published events cover 12 months, averaging 2.75 events per published month. The largest recorded category is Violence and sexual offences with 20 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.