SY20
Postcode districtPostcode district covering Machynlleth, in Powys and Gwynedd.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SY20 postcode. How census figures are added up
Gigabit coverage by postcode district
Connected Nations (Ofcom) · January 2026
In SY20, 73.0% of homes and businesses could get gigabit-capable broadband in January 2026.
How SY20 compares
Each dot is a postcode district. The black line marks the middle one.
Is SY20 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SY20 at a rate of 45.8 per 1,000 people.
That compares with 66.4 per 1,000 people across SY.
In August 2026 alone, 39 cases of crime and anti-social behaviour were recorded in SY20.
In the 12 months to August 2026, the most common types were violence and sexual offences (143), other crime (59) and anti-social behaviour (40).
A year earlier, the recorded crime rate in SY20 was 46.2 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.
Deprivation in SY20, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so SY20 has no single figure. Of its 3 neighbourhoods with a rank:
- Decile 4: 1 neighbourhood
- Decile 5: 1 neighbourhood
- Decile 6: 1 neighbourhood
Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.
Neighbourhoods in SY20
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Gwynedd 015B | 1,254 | 40.6 per 1,000 | 4 | 46.3% |
| Powys 004A | 2,055 | 23.4 per 1,000 | 5 | 78.8% |
| Powys 004C | 2,161 | 78.6 per 1,000 | 6 | 87.3% |
MPs for SY20
- Steve WitherdenLabourMP for Montgomeryshire and Glyndŵr57% of SY20’s postcodes
- Liz Saville RobertsPlaid CymruMP for Dwyfor Meirionnydd34% of SY20’s postcodes
- Ben LakePlaid CymruMP for Ceredigion Preseli8.8% of SY20’s postcodes
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Middle areas in SY201
Postcode sectors in SY203
Councils SY20 covers2
Postcode districts next to SY209
Nearest rail stations1
More in the SY postcode area2
SY20 in brief
SY20 is a postcode district covering Machynlleth, in Powys and Gwynedd.
About 6,663 people lived in SY20 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £195,000 in 2025 across 77 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 45.8 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SY20 was £195,000 in 2025.
SY20 had 6,672 usual residents at the census.
In SY20, 73.0% of homes and businesses could get gigabit-capable broadband in January 2026.
In SY20, 3.0% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.