SY20 9AH
Corris a Mawddwy · Gwynedd · Wales
Updated September 2026
Compare this postcodeLocation overview
- Ward
- Corris a Mawddwy
- Local authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd
- Postcode district
- SY20
- Postcode sector
- SY20 9
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- SY20 9AH
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- SY
- Postcode district
- SY20
- Postcode sector
- SY20 9
- Latitude
- 52.761301
- Longitude
- -3.620797
- British National Grid easting
- 290,727
- British National Grid northing
- 319,419
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Gwynedd · W06000002
- Electoral ward
- Corris a Mawddwy · W05001521
- Parish or community
- W04000091
- Westminster constituency
- Dwyfor Meirionnydd · W07000096
- Output area
- W00000307
- Lower layer super output area
- Gwynedd 015B · W01000060
- Middle layer super output area
- Gwynedd 015 · W02000024
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 SY20
Census 2021
Population and age profile
- Postcode residents
- 12
- Postcode households
- 6
- Residents per household
- 2.0
- SY20 9 residents
- 2,098
7 female, 5 male
Age bands in SY20 9
Wider postcode sector- Age 0 to 14
- 12.5%
- Age 15 to 24
- 7.4%
- Age 25 to 44
- 17.7%
- Age 45 to 64
- 35.2%
- Age 65 and over
- 27.2%
273 residents
162 residents
388 residents
770 residents
594 residents
This postcode contained 0.6% of the sector's usual residents on Census Day. The age profile describes the wider SY20 9 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+
- 50%
- Ultrafast, 100 Mbit/s+
- 50%
- Ultrafast, 300 Mbit/s+
- 50%
- Gigabit-capable
- 50%
- 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.
Nearby transport
- 4.1 miles
Swyddfa'r Post Office
BCT · Dinas Mawddwy
- 4.1 miles
Swyddfa'r Post Office
BCT · Dinas Mawddwy
- 4.5 miles
Minllyn War Memorial
BCT · Minllyn
- 5.1 miles
Brigands Inn
BCT · Mallwyd
- 5.2 miles
Brigands Inn
BCT · Mallwyd