Ystrad Mynach
TownTown in Caerphilly, Wales.
Ystrad Mynach is an ONS built-up area: the land built up as one town, whatever council it is in. Figures for Ystrad Mynach add up the census output areas (or, for claimants, the neighbourhoods) that sit mostly inside it, so they are close to, but not exactly, the town’s own.
Radon Affected Area by town
Worked out by Open Index · 2022
About 98% of people in Ystrad Mynach live in a 1 km square that the radon atlas marks as a radon Affected Area.
How Ystrad Mynach compares
Each dot is a town. The black line marks the middle one.
Is Ystrad Mynach safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Ystrad Mynach at a rate of 111.8 per 1,000 people.
That compares with 96.7 per 1,000 people across Wales.
In August 2026 alone, 128 cases of crime and anti-social behaviour were recorded in Ystrad Mynach.
In the 12 months to August 2026, the most common types were violence and sexual offences (522), other crime (254) and anti-social behaviour (245).
A year earlier, the recorded crime rate in Ystrad Mynach was 97.9 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 Ystrad Mynach, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so Ystrad Mynach has no single figure. Of its 7 neighbourhoods with a rank:
- Decile 1 (Wales’s most deprived 10%): 1 neighbourhood
- Decile 3: 1 neighbourhood
- Decile 5: 2 neighbourhoods
- Decile 6: 2 neighbourhoods
- Decile 9: 1 neighbourhood
Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.
Neighbourhoods in Ystrad Mynach
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Caerphilly 008E | 1,399 | 101.3 per 1,000 | 3 | 50.1% |
| Caerphilly 012A | 1,800 | 70.4 per 1,000 | 6 | 98.0% |
| Caerphilly 012B | 1,779 | 99.5 per 1,000 | 1 | 100.0% |
| Caerphilly 012C | 1,931 | 62.4 per 1,000 | 5 | 98.4% |
| Caerphilly 013D | 2,753 | 88.4 per 1,000 | 6 | 92.3% |
| Caerphilly 013E | 1,360 | 171.2 per 1,000 | 5 | 95.0% |
| Caerphilly 013F | 1,373 | 264.2 per 1,000 | 9 | 97.3% |
Your MP
- Chris EvansLabour (Co-op)MP for Caerphilly
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Council1
Postcode districts covering Ystrad Mynach1
Middle areas in Ystrad Mynach1
Towns near Ystrad Mynach6
Ystrad Mynach in brief
Ystrad Mynach is a town in Caerphilly, Wales.
About 12,058 people lived in Ystrad Mynach in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £196,000 in 2025 across 160 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 111.8 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in Ystrad Mynach was £196,000 in 2025.
Ystrad Mynach had 11,856 usual residents at the census.
About 98% of people in Ystrad Mynach live in a 1 km square that the radon atlas marks as a radon Affected Area.
In Ystrad Mynach, 94.7% of homes and businesses could get gigabit-capable broadband in January 2026.