The Anna Police Department is a full-service municipal law enforcement agency providing the neighbors of Anna, Texas with police protection 24 hours a day, 7 days a week. Law enforcement services are delivered throughout Patrol and Criminal Investigation divisions which are supported by our records division and administration team. Dispatching services are provided by the Collin County Sheriff's Office central 911 center. Persons arrested for criminal offenses by Anna Police Officers and Detectives are held in custody at the Collin County Sheriff's Office Detention Center.