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

Mortimer Avenue area has the 26th highest crime rate of 66 local areas in Pontprennau and Old St Mellons , and the 312th highest crime rate of 1,028 local areas in Cardiff .

At least one of the neighbouring streets has high or very high crime levels. However, overall crime around this postcode is more mixed, with some nearby areas experiencing lower crime.

The overall crime rate in the area around Mortimer Avenue (CF3 6YF) in the last 12 months was 115.1 per 1,000 residents and was 46.6% 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 Anti-social behaviour with 12 offences recorded. The least common crime was Criminal damage and arson with 1 case , down -50.0% compared to 2024. The fastest-growing crime category was Other theft ( 200.0% YoY). The sharpest decline was Criminal damage and arson ( -50.0% YoY).

Violent crimes totalled 9 (≈ 32.4 per 1,000 residents). Year-over-year these were rising ( 350.0% ). Over the last decade, overall crime has rising ( 35.4% comparing early vs recent averages) .

In the area around Mortimer Avenue (CF3 6YF), 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.