National Historic Register properties in Boone county/parish, Iowa

• Barkley, Alonzo J. and Flora, House (Boone)
• Boone Bridge (Boone)
• Boone Bridge 2 (Boone)
• Boone County Courthouse (Boone)
• Boone Viaduct (Boone)
• Champlin Memorial Masonic Temple (Boone)
• Des Moines Township #7 (Boone)
• Ericson Public Library (Boone)
• Finnegan Flats (Boone)
• First National Bank (Boone)
• Herman, John H., House (Boone)
• Perrigo-Holmes House (Boone)
• Riekenberg, J. H., House (Boone)
• Stoll Building Works (Boone)
• Big Creek Bridge (Madrid)
• Big Creek Bridge 2 (Madrid)
• Cassel, Carl and Ulrika Dalander, House (Madrid)
• Beaver Creek Bridge (Ogden)
• Squaw Creek Bridge (Ridgeport)
• Squaw Creek Bridge 2 (Ridgeport)