Total Crime Rate
461.5 per 1,000
All offences · May 2025 - Apr 2026Violent Crime Rate
278.9 per 1,000
May 2025 - Apr 2026Knight Street area has the highest crime rate of 23 local areas in Mountain Ash , and the 10th highest crime rate of 791 local areas in Rhondda Cynon Taf .
This postcode sits in a local crime hotspot. Overall crime levels here are significantly higher than in the surrounding streets and the wider area.
The overall crime rate in the area around Knight Street (CF45 3EY) in the last 12 months was 461.5 per 1,000 residents and was 401.4% higher than the Mountain Ash average (92.1 per 1,000 residents). In the last 12 months, this area’s most reported crimes were Violence and sexual offences with 45 offences recorded. The least common crime was Other crime with 1 case , unchanged from 2025. The fastest-growing crime category was Shoplifting ( 100.0% YoY). The sharpest decline was Violence and sexual offences ( -11.8% YoY).
Violent crimes totalled 58 (≈ 278.8 per 1,000 residents). Year-over-year these were falling ( -10.8% ). Over the last decade, overall crime has falling ( -58.0% comparing early vs recent averages) .
In the area around Knight Street (CF45 3EY), the main crime hotspot is near Chancery Lane. Police recorded 19 crimes here, including 14 violent or public-order offences. All these locations are within roughly 0.3 miles.
View Crime In Mountain Ash| Month | Crime | Location* | Last Outcome |
|---|---|---|---|
| Apr 2026 | Violence and sexual offences | Parking Area | Under investigation |
| Apr 2026 | Other theft | Parking Area | Investigation complete; no suspect identified |
| Apr 2026 | Public order | Navigation Street | Under investigation |
| Apr 2026 | Violence and sexual offences | Ffrwd Crescent | Under investigation |
| Apr 2026 | Violence and sexual offences | Chancery Lane | Awaiting court outcome |
| Apr 2026 | Criminal damage and arson | Chancery Lane | Unable to prosecute suspect |
| Apr 2026 | Anti-social behaviour | Ifor Street | — |
| Apr 2026 | Violence and sexual offences | Navigation Street | Under investigation |
| Apr 2026 | Public order | Jeffrey Street | Under investigation |
| Apr 2026 | Violence and sexual offences | Napier Street | Under investigation |
| Apr 2026 | Violence and sexual offences | Darran Road | Under investigation |
| Apr 2026 | Violence and sexual offences | Pryce Street | Under investigation |
| Apr 2026 | Violence and sexual offences | Pryce Street | Under investigation |
| Apr 2026 | Violence and sexual offences | Phillip Street | Under investigation |
| Apr 2026 | Violence and sexual offences | Phillip Street | Under investigation |
| Apr 2026 | Violence and sexual offences | Graig Street | Under investigation |
StreetScan crime figures are based on official UK open data:
Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright and database right.