SY21 0AF
Rhiwcynon · Powys · Wales
Updated September 2026
Compare this postcodeLocation overview
- Ward
- Rhiwcynon
- Local authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr
- Postcode district
- SY21
- Postcode sector
- SY21 0
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- SY21 0AF
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- SY
- Postcode district
- SY21
- Postcode sector
- SY21 0
- Latitude
- 52.612896
- Longitude
- -3.403063
- British National Grid easting
- 305,097
- British National Grid northing
- 302,603
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Powys · W06000023
- Electoral ward
- Rhiwcynon · W05001167
- Parish or community
- W04000270
- Westminster constituency
- Montgomeryshire and Glyndwr · W07000102
- Output area
- W00002606
- Lower layer super output area
- Powys 006C · W01000488
- Middle layer super output area
- Powys 006 · W02000102
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 SY21
Census 2021
Population and age profile
- Postcode residents
- 4
- Postcode households
- 2
- Residents per household
- 2.0
- SY21 0 residents
- 3,229
2 female, 2 male
Age bands in SY21 0
Wider postcode sector- Age 0 to 14
- 13.9%
- Age 15 to 24
- 10.5%
- Age 25 to 44
- 16.3%
- Age 45 to 64
- 32.6%
- Age 65 and over
- 26.7%
388 residents
292 residents
454 residents
906 residents
743 residents
This postcode contained 0.1% of the sector's usual residents on Census Day. The age profile describes the wider SY21 0 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+
- 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%
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
- 0.2 miles
Cefn Coch
BCT · Cefn Coch
- 0.2 miles
Cefn Coch
BCT · Cefn Coch
- 1.1 miles
Post Office
BCT · Adfa
- 1.1 miles
Post Office
BCT · Adfa
- 2.1 miles
New Inn
BCT · Llanwyddelan