SY20 9DB

Corris a Mawddwy · Gwynedd · Wales

Updated September 2026

Compare this postcode

Location overview

Drag to pan. Use + or - to zoom. Open larger map

Ward: Corris a Mawddwy
Local authority: Gwynedd
Constituency: Dwyfor Meirionnydd
Postcode district: SY20
Postcode sector: SY20 9

Nearby postcodes

Nearby postcode distances
Postcode	Distance
SY20 9DA	20 m
SY20 9BZ	45 m
SY20 9BW	365 m
SY20 9BN	395 m
SY20 9BE	471 m

Complete postcode fields and official codes

Postcode: SY20 9DB
Status: Current
Introduced: 1 January 1980
Terminated: Not published
Postcode area: SY
Postcode district: SY20
Postcode sector: SY20 9
Latitude: 52.660957
Longitude: -3.851554
British National Grid easting: 274,870
British National Grid northing: 308,634

Statistical and administrative geographies

Country: Wales · W92000004
Region: W99999999
Local authority district: Gwynedd · W06000002
Electoral ward: Corris a Mawddwy · W05001521
Parish or community: W04000058
Westminster constituency: Dwyfor Meirionnydd · W07000096
Output area: W00000304
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

Use the wider postcode district to compare the same evidence across more locations.

Schools

Within 3.1 miles of this postcode

View all nearby schools

Open schools: 1
Primary: 0
Secondary: 0

Ysgol Gynradd Dyffryn Dulas

Welsh establishment
908 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records

Published events: 14
Months covered: 12
Latest month: June 2026

Most recorded categories in this period

Violence and sexual offences 6
Anti social behaviour 4
Burglary 1
Other theft 1
Vehicle crime 1

Census 2021

Population and age profile

Postcode residents: 4
Postcode households: 3
Residents per household: 1.3
SY20 9 residents: 2,098

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%

This postcode contained 0.2% of the sector's usual residents on Census Day. The age profile describes the wider SY20 9 sector, not people in this individual postcode.

How to read these estimates

The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

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+: 0%
Ultrafast, 100 Mbit/s+: 0%
Ultrafast, 300 Mbit/s+: 0%
Gigabit-capable: 0%

Unable to receive decent fixed or FWA broadband: 0%
Next Generation Access: 100%
Decent broadband available from fixed wireless: 0%

Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

Nearby transport

Swyddfa'r Post Office

BCT · Corris Uchaf
0.3 miles
Swyddfa'r Post Office

BCT · Corris Uchaf
0.3 miles
Hillsborough

BCT · Corris Uchaf
0.5 miles
Hillsborough

BCT · Corris Uchaf
0.5 miles
Corris Craft Centre

BCT · Corris
0.6 miles

Evidence in context

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Schools

Published establishments

1 open schools are in scope, including 0 primary and 0 secondary schools. Ysgol Gynradd Dyffryn Dulas is the nearest published school at 908 m.

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

Recorded crime

Published police records

14 published events cover 12 months, averaging 1.167 events per published month. The largest recorded category is Violence and sexual offences with 6 events.

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