Photo: nantcoly · CC BY-SA 2.0Treharris stands out for vehicle crime: 2.8 times the rate of a typical town its size
Violence recorded locally dropped 12% in a year. Even so, of the 1,308 UK towns of 2,500 to 10,000 people, 42% record more crime per resident. Treharris grades C+ for safety overall (#6 of 32 in Mid Glamorgan): close to the middle of UK towns, on crimes police recorded inside its built-up area from September 2023 to August 2026. Annual rates stand at 24.7 violent and sexual offences and 11.6 incidents of burglary, vehicle crime and damage for every thousand residents.
Crimes and reports per 1,000 residents (Census 2021) a year, September 2023 to August 2026.
What stands out about safety in Treharris
Violent crime fell over the year
In the 12 months to August 2026 police recorded 12% less violent crime per resident in Treharris than in the year before; across UK towns of 2,500 to 10,000 people violent crime held steady. Burglary, vehicle crime and criminal damage rose 31% (towns its size: held steady). Trend ↓
About the middle for a town its size
Of 518 UK towns of 4,000 to 7,000 people, Treharris has the 296th lowest rate of graded crime: lower than Deepcar, Somerton and Hextable, higher than Waterbeach, Sowerby and Halfway Houses. Towns its size ↓
Many neighbourhoods rank low for crime in Wales
The Welsh Index of Multiple Deprivation 2025 ranks every neighbourhood in Wales on community safety. 32% of Treharris’s residents live in one of the lowest-crime 10%, and 0% in one of the highest-crime 20%. Neighbourhood ranks ↓
Written from the police.uk and government data on this page. Figures are crimes police recorded, not convictions.
What’s behind Treharris’s grade
A fairly firm grade. Built on 546 graded crimes over three years. The grade adds violent and sexual offences and crimes against homes and vehicles per resident and ranks Treharris against every UK town of 1,000 or more.
Per resident, against all UK towns; beside it, how it compares with towns its size.
What police recorded in the last 12 months
Against the typical town its size, Treharris runs highest on vehicle crime (5.6 per 1,000 against 2), public order (6 per 1,000 against 3.6) and other crime (2.2 per 1,000 against 1.5). Other theft sits below it.
Show as a table
| Category | In the grade | Reports | Per 1,000 | Typical |
|---|---|---|---|---|
| Violence & sexual offences | Violent | 99 | 19.6 | 22.4 |
| Anti-social behaviour | not graded | 49 | 9.7 | 8.8 |
| Public order | not graded | 30 | 6 | 3.6 |
| Criminal damage & arson | Home & vehicle | 28 | 5.6 | 4.5 |
| Vehicle crime | Home & vehicle | 28 | 5.6 | 2 |
| Other theft | not graded | 13 | 2.6 | 3.2 |
| Other crime | not graded | 11 | 2.2 | 1.5 |
| Shoplifting | not graded | 8 | 1.6 | 1.8 |
| Burglary | Home & vehicle | 8 | 1.6 | 1.9 |
| Drugs | not graded | 2 | 0.4 | 1 |
| Possession of weapons | Violent | 2 | 0.4 | 0.4 |
| Bicycle theft | not graded | 0 | 0 | 0.1 |
| Robbery | Violent | 0 | 0 | 0.2 |
| Theft from the person | not graded | 0 | 0 | 0 |
“Violent” is police.uk’s violence and sexual offences (which includes harassment, stalking and assault without injury), robbery and possession of weapons. Anti-social behaviour isn’t a crime category; shoplifting and other theft happen mostly in shops and town centres rather than to residents, so neither counts in the grade.
September 2025 to August 2026, per 1,000 residents. The tick on each bar is the typical (median) town among UK towns of 2,500 to 10,000 people.
A third of Treharris residents live in one of Wales’s lowest-crime neighbourhoods
32% of residents live in the lowest-crime 30% of Wales’s neighbourhoods, and 0% in the highest-crime 20%. The community safety domain scores recorded crime, anti-social behaviour and fire incidents where people live, so it can read differently from the town-wide rate, which counts crimes where they happened.
Treharris’s residents by the crime decile of their neighbourhood (LSOA, about 1,500 people) in the Welsh Index of Multiple Deprivation 2025 (community safety domain), where 1 is the highest-crime 10% of Wales’s neighbourhoods and 10 the lowest.
How crime in Treharris has moved
“Towns its size” pools all UK towns of 2,500 to 10,000 people that police.uk covers each month (Greater Manchester has no data).
Rolling twelve-month rate, per 1,000 residents a year (longer windows for smaller places, where a few crimes swing a month). In the 12 months to August 2026 against the 12 before: violent -12% (towns its size +1%), homes and vehicles +31% (towns its size -1%), shoplifting and theft -28% (towns its size +2%), anti-social behaviour +2% (towns its size +0%).
Set against 518 towns its size, Treharris is 296th
| # | Town | People | Violent | Homes & vehicles | Shops & theft | Safety |
|---|---|---|---|---|---|---|
| 1 | Bailrigg Lancashire | 4,788 | 4.7 | 2.5 | 7.9 | A+ |
| … | ||||||
| 111 | Pontyclun Mid Glamorgan | 5,801 | 17.2 | 7.5 | 6.1 | B+ |
| … | ||||||
| 293 | Waterbeach Cambridgeshire | 5,375 | 23.5 | 12.7 | 7 | C+ |
| 294 | Sowerby North Yorkshire | 4,727 | 25.3 | 11 | 6.8 | C+ |
| 295 | Halfway Houses Kent | 4,396 | 25.7 | 10.5 | 9.3 | C+ |
| 296 | Treharris Mid Glamorgan | 5,042 | 24.7 | 11.6 | 6.2 | C+ |
| 297 | Bulkington Warwickshire | 5,670 | 21.2 | 15.2 | 3.9 | C+ |
| 298 | Hemsby Norfolk | 5,724 | 27.1 | 9.3 | 4.4 | C+ |
| 299 | Carnforth Lancashire | 5,852 | 26.5 | 10 | 9.7 | C+ |
| … | ||||||
| 303 | Ynysybwl Mid Glamorgan | 4,580 | 28.1 | 8.7 | 3.6 | C+ |
| … | ||||||
| 379 | Ferndale Mid Glamorgan | 4,301 | 31.3 | 13.1 | 6.6 | C |
| … | ||||||
| 439 | Abercynon Mid Glamorgan | 6,376 | 39.9 | 13.5 | 5.3 | C− |
| … | ||||||
| 518 | Stainforth South Yorkshire | 5,999 | 72.5 | 49.7 | 14.4 | D− |
Safety letters rank against every UK town of 1,000 or more; the order here is context only.
Graded crime per 1,000 residents a year, September 2023 to August 2026, counting from the least: towns ranked near Treharris, and others in Mid Glamorgan.
Crime in Treharris per 1,000 residents
A crime isn’t a victim: one person can report several, and crimes in a town centre often involve visitors rather than residents.
And about 13 burglaries, vehicle crimes or acts of criminal damage, plus 4 shoplifting and theft reports, in the 12 months to August 2026. Each dot is one resident; each coloured dot is one recorded crime.
Police name a suspect about as often as across UK towns
No suspect was identified for 69% of Treharris’s burglaries, vehicle crimes and criminal damage, against 69% across UK towns, and for 11% of violent and sexual offences against 19%. Most violent cases close as “unable to prosecute” (69% here), usually because the victim doesn’t support a prosecution. About 8% of violent and 5% of household crimes reached court.
The latest outcome police.uk shows for each crime recorded in the first of the three years (September 2023 to August 2024), so most cases have closed. 217 crimes.
Where in Treharris police recorded crime
| At or near | Reports | Mostly |
|---|---|---|
| Supermarkets | 49 | 71% shoplifting & theft |
| Sports and recreation grounds | 27 | 56% violent |
| Petrol stations | 21 | 38% homes & vehicles |
police.uk places each crime at an anonymous map point; some are named for the kind of place (a supermarket, a car park), and each row adds up every place of that kind in Treharris. We show only these, never streets or homes.
Beside it, the public places police.uk named most often.
No one died in a collision on Treharris’s roads in 2021–2025
Police recorded 7 collisions with injuries inside Treharris in five years. 1 person was killed or seriously injured: 1 on foot and 0 on a bicycle.
Most UK towns of 2,500 to 10,000 people (81%) had no road deaths in these five years, and Treharris is one of them.
Counting serious injuries too, a town of Treharris’s size at the median for UK towns of 2,500 to 10,000 people would see about 4 people killed or seriously injured in five years; Treharris had 1.
Casualties are counted where the collision happened, not where people lived: a main road through town adds through-traffic, and residents’ own risk on roads elsewhere isn’t here. Seriously injured uses the Department for Transport’s adjusted figures, which even out the police forces’ different ways of recording injuries. There’s no national rate here: more than half of road deaths in England and Wales (58%) happen outside every town’s built-up area. Source: DfT road casualty statistics (STATS19), 2021–2025.
Collisions police recorded inside Treharris’s built-up area, 2021–2025. Described here; not part of the Safety Grade.
Crime in the places around Treharris
Treharris records more graded crime per resident than 1 of its 7 neighbours. Pen-pedair-heol, 2.8 miles away, records 19.1 violent and sexual offences per 1,000 residents a year (3-year average), against Treharris’s 24.7.
Per 1,000 residents a year, the same three years. Tap a town for its safety page.
What this data can and can’t tell you
- Where crimes happen, not where victims live. police.uk places each crime at a point near where it happened. Town centres with shops, stations, a hospital and nightlife record more crime per resident, and residents of nearby villages who come in to shop or go out are part of that count.
- Bigger towns record more per resident. Across UK towns, recorded crime per resident rises steeply with size, more than in the U.S., so a city’s grade sits low against the whole UK. The “towns its size” figures show where Treharris sits among towns like it; they are context and don’t change the grade.
- Points are approximate. police.uk moves each point to the nearest of a set of anonymous map points, so crimes near the edge of the built-up area can fall either side of it.
Questions about safety in Treharris
Is Treharris safe?
Police recorded 24.7 violent and sexual offences and 11.6 burglaries, vehicle crimes and acts of criminal damage per 1,000 residents a year over the three years to August 2026 (police.uk, inside Treharris’s built-up area). That earns a C+ for safety: less crime per resident than 42% of UK towns. Among 518 UK towns of 4,000 to 7,000 people, Treharris is 296th from the least crime. 32% of residents live in neighbourhoods in Wales’s lowest-crime 10%.
Is crime going up in Treharris?
In the 12 months to August 2026, against the 12 months before, violent crime fell 12%, burglary, vehicle crime and damage rose 31%, shoplifting and theft fell 28% and anti-social behaviour held steady. Across UK towns of 2,500 to 10,000 people, violent crime held steady.
What is the most common crime in Treharris?
Violence & sexual offences: 99 in the 12 months to August 2026, which in police.uk includes harassment, stalking and assault without injury. Next came public order (30) and criminal damage & arson (28), with 49 reports of anti-social behaviour.
How does Treharris compare with Pontypridd?
Pontypridd records 46.7 violent and sexual offences and 14.4 crimes against homes and vehicles per 1,000 residents a year, against Treharris’s 24.7 and 11.6, over the same three years.
Sources: data.police.uk street-level crime, 36 months to August 2026, points inside the built-up-area boundary · ONS Census 2021, output areas summed to the ONS 2022 built-up area · Welsh Government Welsh Index of Multiple Deprivation 2025, community safety domain by LSOA · Department for Transport road casualty statistics (STATS19), collisions 2021–2025, points inside the built-up-area boundary · TownRatings grades: our own summary of the data, ranked against UK towns only. All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.