Iowa - Constructed - 1860–1869
| Allamakee County Courthouse |
| Big Creek Schoolhouse |
| Church, Seymour, House |
| Darwin, Mary, House |
| Davison, Abner, House |
| Davis, Timothy, House |
| Dunn, William and Phebe C., House |
| Farwell, S. S., House |
| First Johnson County Asylum |
| Forney, James M., House |
| Godard, Milton, House |
| Hawkeye Insurance Company Building |
| Horton-Suiter House |
| Hulme, Samuel and Sarah, House |
| Iowa Soldiers' Orphans' Home |
| Keck, Joseph, House |
| Kurtz House |
| Kvindherred Lutheran Church, School and Cemetery |
| Lubben, Henry, House, Smokehouse and Springhouse |
| Manatt, William, House |
| McCartney, James H. and Mayetta (Degrush), House |
| McCollister, James, Farmstead |
| McKibben, S. M., House |
| McMahon House |
| Mill Rock School |
| Moorehead Stagecoach Inn |
| Naylor House |
| Newcome, Daniel T., Double House |
| Old East Paint Creek Lutheran Church |
| Palmyra Methodist Episcopal Church |
| Russell, Rensselaer, House |
| Shields Woolen Mill |
| Sieben, Mrs. Margaret, House |
| Smith, Alvord I., House |
| Smith, James J. and Anna J. (Linean), House #2 |
| St. Mary's Roman Catholic Church Complex |
| St. Patrick's Church |
| Taft, Stephen Harris, House |
| Union Bakery |
| Van Den Berg, Hendrik J. and Wilhelmina H., Cottage |
| Wood, Jeremiah, House |
Data from United States Park Service and Wikidata
