Crime Rates at St Seiriols Close, Holyhead, LL65 1RD

St Seiriols Close area has the 16th highest crime rate of 35 local areas in Parc a'r Mynydd , and the 37th highest crime rate of 222 local areas in Isle of Anglesey .

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 St Seiriols Close (LL65 1RD) in the last 12 months was 114.4 per 1,000 residents and was 32.9% higher than the Parc a'r Mynydd average (86.1 per 1,000 residents). In the last 12 months, this area’s most reported crimes were Violence and sexual offences with 15 offences recorded. The least common crime was Possession of weapons with 1 case , unchanged from 2025. The fastest-growing crime category was Anti-social behaviour ( 14.3% YoY). The sharpest decline was Public order ( -50.0% YoY).

Violent crimes totalled 17 (≈ 62.7 per 1,000 residents). Year-over-year these were falling ( -29.2% ). Over the last decade, overall crime has falling ( -43.1% comparing early vs recent averages) .

In the area around St Seiriols Close (LL65 1RD), the highest concentration of overall crime is near Market Street, where police recorded 94 incidents. Violent and public-order offences occur most often near Parking Area (29 offences). Both locations lie within roughly 0.3 miles of this postcode area.