Crime Rates at Mortimer Avenue, Old St Mellons, Cardiff, CF3 6YG

Mortimer Avenue area has the 21st highest crime rate of 66 local areas in Pontprennau and Old St Mellons , and the 217th highest crime rate of 1,028 local areas in Cardiff .

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 Mortimer Avenue (CF3 6YG) in the last 12 months was 144.7 per 1,000 residents and was 84.4% higher than the Pontprennau and Old St Mellons average (78.5 per 1,000 residents). In the last 12 months, this area’s most reported crimes were Violence and sexual offences with 24 offences recorded. The least common crime was Drugs with 1 case , unchanged from 2024. The fastest-growing crime category was Criminal damage and arson ( 1100.0% YoY). The sharpest decline was Other theft ( -80.0% YoY).

Violent crimes totalled 30 (≈ 65.8 per 1,000 residents). Year-over-year these were rising ( 100.0% ). Over the last decade, overall crime has rising ( 44.6% comparing early vs recent averages) .

In the area around Mortimer Avenue (CF3 6YG), the highest concentration of overall crime is near Supermarket, where police recorded 45 incidents. Violent and public-order offences occur most often near Heol Booths (15 offences). Both locations lie within roughly 0.3 miles of this postcode area.