Iowa - Area of significance: Education
| Morningside College Historic District |
| Morrill Hall |
| Mount Saint Bernard Seminary and Barn |
| Munson Building |
| Norman Apartment Building |
| North River Stone Schoolhouse |
| Odenweller, F. F.-James P. and Nettie Morey House |
| Old Chapel Hall |
| Old Lenox College |
| Old Town Historic District |
| Palmer, B. J., House |
| Pella High School |
| Penn College Historic District |
| Perry Carnegie Library Building |
| Pierce School No. 13 |
| Pierson-Betts House |
| Pleasant Hill School |
| Pleasant Lawn School Historic District |
| Plum Grove |
| Prairie Grove School |
| President's Cottage |
| Putnam-Parker Block |
| Red Oak High School |
| Reverend Little's Young Ladies Seminary |
| Reynolds, Anson O., House |
| Roosevelt Elementary School |
| Roosevelt School |
| Sacred Heart Hospital |
| Saint Ansgar Public School |
| School Number 6 |
| Scott, Mary A. and Caleb D., House |
| Shelby Consolidated School |
| Sherman, Lampson P., House |
| Shimek, Bohumil, House |
| Sigma Pi Fraternity House |
| Simmons, John P., House |
| Sioux City Central High School |
| Sioux City Public Library-North Side Branch |
| Smouse, David W., Opportunity School |
| Spencer High School and Auditorium |
| Spurgin Residence |
| Steamboat Rock Consolidated Schools Building |
| St. Katherine's Historic District |
| St. Mary's Catholic Church Historic District |
| St. Mary's Catholic Church Historic District |
| Stock Judging Pavilion |
| Stokes, Dr. Ella, House |
| Stone Academy |
| Stranahan, Prof. Edgar H. and Irene D., House |
| Stuart, Dr. Richard and Paulina, House |
| Sumner High School |
| Sumner School |
| Taylor School |
| Theodore Roosevelt High School |
| Troy Academy |
| Ulysses Simpson Grant Elementary School |
| Vail, Mrs. Marian D.-Prof. Charles Noyes Kinney House |
| Vinton Public Library |
| Wagner-Mozart Music Hall |
| Walnut Grove School |
| Wartburg College Historic District |
| Wartburg Teachers' Seminary |
| Washington Township Center High School |
| Waterloo Public Library-East Side Branch |
| Whittier School |
| Williamson School |
| Wilson District #7 School |
| Winterset High School |
| Woodbine Public Library |
| Zwemer Hall, Northwestern College |
Data from United States Park Service and Wikidata
