National Historic Register properties in Preble county/parish, Ohio

• Camden City Hall and Opera House (Camden)
• Camden Public School (Camden)
• Hueston Woods Park Mound (College Corner)
• Acton House (Eaton)
• Christman Covered Bridge (Eaton)
• Christman, Daniel, Homestead (Eaton)
• Eaton High School (Eaton)
• Fort St. Clair Site (Eaton)
• Roberts Covered Bridge (Eaton)
• St. Clair Street Bridge (Eaton)
• Bunker Hill House (Fairhaven)
• Harshman Covered Bridge (Fairhaven)
• Brubaker Covered Bridge (Gratis)
• Euphemia Inn and Tavern (Lewisburg)
• Geeting Covered Bridge (Lewisburg)
• Warnke Covered Bridge (Lewisburg)
• Historic Associate Reformed Church and Cemetery (Morning Sun)
• Lange Hotel (West Alexandria)
• Unger, George B., House (West Alexandria)
• West Alexandria Depot (West Alexandria)