The Plaquemines Parish Sheriffs Office handles the entire criminal, civil, and tax divisions operations, and provides police protection throughout the parish. Plaquemines is under 24-hour patrol by the criminal division. All patrol vehicles are radio equipped to maintain constant contact with radio headquarters in Port Sulphur. The Parish Prison is located in Pointe-a-la-Hache, and a supplemental lockup is adjacent to the Belle Chasse ferry landing.
Fire protection in Plaquemines Parish is provided through nine highly equipped fire stations organized into six fire departments, and manned by volunteer firemen located throughout the parish. In addition, the parish has marine and mobile equipment units that provide fire protection.