The police recorded 71.9 crimes per 1,000 people a year in Abercynon from September 2023 to August 2026, 6% lower than the typical town's 76.2. The most common was violence and sexual offences, at 38.8. In the 12 months to August 2026 it was 67.6, down from 77.7 in the 12 months to August 2024.