Government Offices in St. Marks 4 Government Offices in St. Marks St. Marks SearchAll (35)Restaurants (7)Hotels & lodging (2)Parks & nature (3)Government Offices (4)Beauty Salons (1)Historical Sites (2)Marinas (1)Fitness & Recreation Centers (5)Grocery & food markets (3)Event Venues & Spaces (2)City of Saint Marks Florida Government Offices788 Port Leon DrSam O. Purdom Generating Station Government Offices667 Port Leon DrSt. Marks, Florida Government OfficesUnited States Postal Service Government Offices779 Port Leon Dr