All - Architect - William L. Steele
| Charles Mix County Courthouse |
| City Hall and Auditorium |
| Doyle, Harold A. (H. A.), House |
| Everist, H. H., House |
| Hawarden City Hall, Fire Station and Auditorium |
| Holy Trinity Greek Orthodox Church |
| Lee Tire and Rubber Company |
| Newton, James P., House and Maid Cottage |
| Picotte, Dr. Susan, Memorial Hospital |
| Sacred Heart Hospital |
| Schulein, Ben and Harriet, House |
| Sioux City Baptist Church |
| Sioux City Public Library-North Side Branch |
| Sioux City Public Library (Smith Villa Branch) |
| St. Patrick's Catholic Church, Cedar |
| St. Rose of Lima Catholic Church and School Complex |
| Williges Building |
Data from United States Park Service and Wikidata
