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Treorchy

Town

Town in Rhondda Cynon Taf, Wales.

Treorchy is an ONS built-up area: the land built up as one town, whatever council it is in. Figures for Treorchy 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.

Open in map

Radon Affected Area by town

Worked out by Open Index · 2022

Under 1%90% or more

About 52% of people in Treorchy live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£137,000
24th cheapest of 1,092
Worked out by Open Index
Population
7,645
21st least populated of 1,209
ONS Census 2021 · 2021
People in radon Affected Area squares
52%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
93.1%
UK 87.8%
Ofcom · Jan 2026

How Treorchy compares

Each dot is a town. The black line marks the middle one.

TreorchyMiddle
Median sale price76 towns, Wales · 2025
Median sale price: every town in Wales76 areas from £120,000 to £344,000. The middle area is £194,375. Treorchy is £137,000.
£137,0006th cheapest
Population76 towns, Wales · 2021
Population: every town in Wales76 areas from 7,546 to 348,511. The middle area is 13,457. Treorchy is 7,645.
7,6453rd least populated
People in radon Affected Area squares76 towns, Wales · 2022
People in radon Affected Area squares: every town in Wales76 areas from 2.0% to 100.0%. The middle area is 100.0%. Treorchy is 52.0%.
52%9th fewest people in radon Affected Areas
Gigabit broadband coverage76 towns, Wales · Jan 2026
Gigabit broadband coverage: every town in Wales76 areas from 55.2% to 99.0%. The middle area is 93.5%. Treorchy is 93.1%.
93.1%36th lowest

Is Treorchy safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Treorchy at a rate of 86.9 per 1,000 people.

That compares with 96.7 per 1,000 people across Wales.

In August 2026 alone, 61 cases of crime and anti-social behaviour were recorded in Treorchy.

In the 12 months to August 2026, the most common types were violence and sexual offences (271), other crime (131) and anti-social behaviour (116).

A year earlier, the recorded crime rate in Treorchy was 77.8 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 Treorchy, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so Treorchy has no single figure. Of its 5 neighbourhoods with a rank:
  • Decile 3: 2 neighbourhoods
  • Decile 5: 1 neighbourhood
  • Decile 6: 2 neighbourhoods

Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.

Neighbourhoods in Treorchy

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Rhondda Cynon Taf 010A1,45286.2 per 1,000692.0%
Rhondda Cynon Taf 010B1,45080.0 per 1,000691.8%
Rhondda Cynon Taf 010C1,53787.5 per 1,000398.8%
Rhondda Cynon Taf 010D1,46592.1 per 1,000393.0%
Rhondda Cynon Taf 010E1,74488.0 per 1,000590.6%

Your MP

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 Treorchy1

Middle areas in Treorchy1

Towns near Treorchy6

Treorchy in brief

Treorchy is a town in Rhondda Cynon Taf, Wales.

About 7,621 people lived in Treorchy in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £137,000 in 2025 across 103 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 86.9 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in Treorchy was £137,000 in 2025.

Treorchy had 7,645 usual residents at the census.

About 52% of people in Treorchy live in a 1 km square that the radon atlas marks as a radon Affected Area.

In Treorchy, 93.1% of homes and businesses could get gigabit-capable broadband in January 2026.