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Treorchy

Ward

West Rhondda Cynon Taf. About 7,621 people (mid-2024 estimate) in 13 square kilometres.

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Radon Affected Area by ward

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.

Population
7,645
Joint 3,603rd most populated of 8,397
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
Claimant rate
3.9%
UK 3.9%
ONS via Nomis · Aug 2026

How Treorchy compares

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

TreorchyMiddle
Population46 wards, Rhondda Cynon Taf · 2021
Population: every ward in Rhondda Cynon Taf46 areas from 2,013 to 10,012. The middle area is 5,236. Treorchy is 7,645.
7,6454th most populated
People in radon Affected Area squares46 wards, Rhondda Cynon Taf · 2022
People in radon Affected Area squares: every ward in Rhondda Cynon Taf46 areas from 5.0% to 100.0%. The middle area is 100.0%. Treorchy is 52.0%.
52%5th fewest people in radon Affected Areas
Gigabit broadband coverage46 wards, Rhondda Cynon Taf · Jan 2026
Gigabit broadband coverage: every ward in Rhondda Cynon Taf46 areas from 0.0% to 99.0%. The middle area is 90.8%. Treorchy is 93.1%.
93.1%17th highest
Claimant rate46 wards, Rhondda Cynon Taf · Aug 2026
Claimant rate: every ward in Rhondda Cynon Taf46 areas from 0.9% to 5.6%. The middle area is 3.2%. Treorchy is 3.9%.
3.9%joint 12th highest

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 86.2 per 1,000 people across Rhondda Cynon Taf.

Across Wales as a whole, the recorded crime rate was 96.7 per 1,000 people.

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).

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.

Figures for the whole of Rhondda Cynon Taf

These figures are published for the whole of Rhondda Cynon Taf, not for each ward, so they describe all of Rhondda Cynon Taf and not Treorchy alone. See Rhondda Cynon Taf

Average house price
£165,213
Up 4.9% in a year
HM Land Registry · Aug 2026
Median full-time pay
£34,837
56th lowest paid of 348
ONS earnings survey · 2025
House price to pay
4.7×
Joint 33rd most affordable of 348
Worked out by Open Index
Population estimate
241,015
Down 0.3% in a year
ONS population estimates · 2025
Treorchy in brief

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.

In Treorchy, 3.9% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.