Law Enforcement Agencies in Hannibal, TX TX › Erath County Agencies serving the city of Hannibal in TX. Agency Types in Hannibal Campus Police 1 agencies Coroners 1 agencies County Jails 1 agencies Municipal Police 1 agencies Sheriff 1 agencies All Agencies in Hannibal, TX Erath County Jail Erath County Erath County Sheriffs Department Erath County Office Of The Erath County Justice of the Peace Erath County Stephenville Police Department Erath County Tarleton State University Erath County
