The police recorded 45.8 crimes per 1,000 people a year in Caister-on-Sea from September 2023 to August 2026, 40% lower than the typical town's 76.2. The most common was violence and sexual offences, at 27.9. In the 12 months to August 2026 it was 41.4, down from 46.2 in the 12 months to August 2024.