Iowa - Constructed - 1870–1879
| Adams County Jail |
| Appanoose County Sheriff's House and Jail |
| Ball, W. C., House |
| Bassnett-Nickerson House |
| Billingsley-Hills House |
| Bryan, Alden, House |
| Cavanaugh-Zetek House |
| Chariton Free Public Library |
| Clark, Alexander, House |
| Clark House |
| Coralville Public School |
| Cottage at Rock and Dubuque Streets |
| Cowles, George H and Alice Spaulding, House |
| Cutler-Donahue Covered Bridge |
| Elbert-Bates House |
| Foley, John, House |
| Frick's Tavern |
| Fuller, W. Joseph, House |
| Graceland Cemetery Chapel |
| Harker House |
| Hebard, Alfred, House |
| House at 505 Court Street |
| Imes Covered Bridge |
| Iowa Men's Reformatory Historic District |
| Jackson-Swisher House and Carriage House |
| Janko, Jan F. and Antonie, Farmstead District |
| Koenig Building |
| Le Mars Public Library |
| Martin, S. F., House |
| McWaid, Job A. and Rebecca E., House |
| Nichols, Samuel, House |
| Ormsby-Kelly House |
| Osceola Masonic Block |
| Perrigo-Holmes House |
| Perry, T. B., House |
| Prairie Grove School |
| Raymond, P. P., House |
| Rittenmeyer, F. X., House |
| Schlapp, George E., House |
| Smith Farmhouse |
| St. Paul's English Lutheran Church |
| Stuckslager, Harrison, House |
| Tama County Jail |
| Trinity Episcopal Cathedral |
| Vermilion Estate |
| Vincent House |
| Voorhees, John K., House |
| Weber, Alois and Annie, House |
| Wells-Stubbs House |
| West, Wesley, House |
| White, H. A., General Store and House |
Data from United States Park Service and Wikidata
