National Historic Register properties in Hardin county/parish, Iowa

• Illinois Central Combination Depot-Ackley (Ackley)
• Alden Bridge (Alden)
• Alden Public Library (Alden)
• Civilian Conservation Corps-Prisoner of War Recreation Hall (Eldora)
• Eldora Downtown Historic District (Eldora)
• Eldora Public Library (Eldora)
• First Congregational Church (Eldora)
• Hardin County Courthouse (Eldora)
• Hardin County Home Historic District (Eldora)
• Carnegie-Ellsworth Public Library (Iowa Falls)
• Edgewood School of Domestic Arts (Iowa Falls)
• Ellsworth-Jones Building (Iowa Falls)
• Estes Park Band Shell (Iowa Falls)
• First National Bank (Iowa Falls)
• Iowa Falls Bridge (Iowa Falls)
• Iowa Falls Union Depot (Iowa Falls)
• Kurtz, Glenn and Nell, Lustron Home and Garage (Iowa Falls)
• McClanahan Block (Iowa Falls)
• Metropolitan Opera House (Iowa Falls)
• Mills Tower Historic District (Iowa Falls)
• Princess-Sweet Shop (Iowa Falls)
• River Street Bridge (Iowa Falls)
• Sentinel Block (Iowa Falls)
• Slayton Farms-Round Barn (Iowa Falls)
• St. Matthew's by the Bridge Episcopal Church (Iowa Falls)
• Union Cemetery Gardener's Cottage (Iowa Falls)
• US Post Office-Iowa Falls (Iowa Falls)
• Washington Avenue Bridge (Iowa Falls)
• Washington Avenue Commercial Historic District (Iowa Falls)
• W. R. C. Hall (Iowa Falls)
• Honey Creek Friends' Meetinghouse (New Providence)
• New Providence Building Association Stores (New Providence)
• New Providence School Gymnasium (New Providence)
• Folkert Mound Group (Steamboat Rock)
• Steamboat Rock Consolidated Schools Building (Steamboat Rock)