Property market
The five-year median is £345,000 from 2 recorded sales in SY21 8SZ. This is a recorded-sale statistic, not a current valuation.
The latest UK House Price Index average for Powys is £231,004 in June 2026, up 2.9% year on year.
SY21 8SZ
Trelystan and Trewern · Powys · Wales
Updated September 2026
Compare this postcodeLocation overview
Drag to pan. Use + or - to zoom. Open larger map
- Post town
- Welshpool
- Local authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr
- Postcode district
- SY21
- Postcode sector
- SY21 8
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- SY21 8SZ
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- SY
- Postcode district
- SY21
- Postcode sector
- SY21 8
- Latitude
- 52.685158
- Longitude
- -3.084595
- British National Grid easting
- 326,780
- British National Grid northing
- 310,269
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Powys · W06000023
- Electoral ward
- Trelystan and Trewern · W05001171
- Parish or community
- W04000351
- Westminster constituency
- Montgomeryshire and Glyndwr · W07000102
- Output area
- W00002657
- Lower layer super output area
- Powys 005D · W01000497
- Middle layer super output area
- Powys 005 · W02000101
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
Property
17 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| Ty Coch, Cefn, Welshpool, SY21 8SZ | 24 June 2025 | £305,000 |
| Plas Y Don, Cefn, Welshpool, SY21 8SZ | 28 June 2024 | £385,000 |
| Upper Cefn Cottage, Cefn, Welshpool, SY21 8SZ | 4 April 2018 | £325,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 4
- Primary
- 0
- Secondary
- 0
- 686 m
Buttington Trewern C.P. School
Welsh establishment
- 4.1 km
Welshpool High School
Welsh establishment
- 4.8 km
Leighton C.P. School
Welsh establishment
Recorded crime
Within 1 mile of this postcode
- Published events
- 60
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 41
- Public order 7
- Anti social behaviour 4
- Criminal damage and arson 4
- Burglary 3
Census 2021
Population and age profile
- Postcode residents
- 24
- Postcode households
- 10
- Residents per household
- 2.4
- SY21 8 residents
- 4,734
11 female, 13 male
Age bands in SY21 8
Wider postcode sector- Age 0 to 14
- 13.4%
- Age 15 to 24
- 10.4%
- Age 25 to 44
- 18.7%
- Age 45 to 64
- 30%
- Age 65 and over
- 27.5%
637 residents
491 residents
887 residents
1,424 residents
1,303 residents
This postcode contained 0.5% of the sector's usual residents on Census Day. The age profile describes the wider SY21 8 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+
- 92.3%
- Ultrafast, 300 Mbit/s+
- 92.3%
- Gigabit-capable
- 92.3%
- Unable to receive decent fixed or FWA broadband
- 0%
- Next Generation Access
- 100%
- Decent broadband available from fixed wireless
- 84.6%
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 straight-line
WELSHPOOL MEDICAL CENTRE
SALOP ROAD, WELSHPOOL, SY21 7ER
ODS code W96010
4.5 km
Nearby transport
- 0.4 miles
Little Chef
BCT · Cefn
- 0.6 miles
Heldre Turn
BCT · Buttington
- 0.6 miles
Heldre Turn
BCT · Buttington
- 0.9 miles
Trewern Bus Shelter
BCT · Trewern
- 0.9 miles
Criggion Lane
BCT · Trewern
Evidence in context
Schools
4 open schools are in scope, including 0 primary and 0 secondary schools. Buttington Trewern C.P. School is the nearest published school at 686 m.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
60 published events cover 12 months, averaging 5 events per published month. The largest recorded category is Violence and sexual offences with 41 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.