CF42
Postcode districtPostcode district covering Treorchy, Treherbert and Pen-yr-englyn, in Rhondda Cynon Taf.
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 CF42 postcode. How census figures are added up
Gigabit coverage by postcode district
Connected Nations (Ofcom) · January 2026
In CF42, 93.1% of homes and businesses could get gigabit-capable broadband in January 2026.
How CF42 compares
Each dot is a postcode district. The black line marks the middle one.
Is CF42 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CF42 at a rate of 84.1 per 1,000 people.
That compares with 96.0 per 1,000 people across CF.
In August 2026 alone, 106 cases of crime and anti-social behaviour were recorded in CF42.
In the 12 months to August 2026, the most common types were violence and sexual offences (498), other crime (233) and anti-social behaviour (155).
A year earlier, the recorded crime rate in CF42 was 75.5 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 CF42, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so CF42 has no single figure. Of its 9 neighbourhoods with a rank:
- Decile 1 (Wales’s most deprived 10%): 1 neighbourhood
- Decile 2: 2 neighbourhoods
- Decile 3: 2 neighbourhoods
- Decile 4: 1 neighbourhood
- 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 CF42
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Rhondda Cynon Taf 007A | 1,548 | 80.2 per 1,000 | 4 | 95.1% |
| Rhondda Cynon Taf 007B | 1,362 | 117.0 per 1,000 | 1 | 93.0% |
| Rhondda Cynon Taf 007C | 1,484 | 51.0 per 1,000 | 2 | 89.8% |
| Rhondda Cynon Taf 007D | 1,311 | 76.0 per 1,000 | 2 | 93.8% |
| Rhondda Cynon Taf 010A | 1,452 | 86.2 per 1,000 | 6 | 92.0% |
| Rhondda Cynon Taf 010B | 1,450 | 80.0 per 1,000 | 6 | 91.8% |
| Rhondda Cynon Taf 010C | 1,537 | 87.5 per 1,000 | 3 | 98.8% |
| Rhondda Cynon Taf 010D | 1,465 | 92.1 per 1,000 | 3 | 93.0% |
| Rhondda Cynon Taf 010E | 1,744 | 88.0 per 1,000 | 5 | 90.6% |
Your MP
- Chris BryantLabourMP for Rhondda and Ogmore
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 CF422
Postcode sectors in CF423
Council1
Towns in CF421
Postcode districts next to CF425
Nearest rail stations4
More in the CF postcode area2
CF42 in brief
CF42 is a postcode district covering Treorchy, Treherbert and Pen-yr-englyn, in Rhondda Cynon Taf.
About 13,411 people lived in CF42 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £125,000 in 2025 across 191 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 84.1 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CF42 was £125,000 in 2025.
CF42 had 13,352 usual residents at the census.
In CF42, 93.1% of homes and businesses could get gigabit-capable broadband in January 2026.
In CF42, 4.4% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.