Iowa - Area of significance: Architecture
| Downtown Commercial Historic District |
| Downtown Commercial Historic District |
| Dows Street Historic District |
| Dowtown Perry Historic District |
| Drake, John and Amanda Bigler, House |
| Drake Public Library |
| Dubuque City Hall |
| Dubuque County Courthouse |
| Dubuque County Jail |
| Dubuque Millworking Historic District |
| Dubuque Star Brewery |
| Dubuque YMCA Building |
| Duff Barn |
| Duncan-Duitsman Farm Historic District |
| Duncan, John M., House |
| Dunn, William and Phebe C., House |
| Dunsmore House |
| Dyas, George, House |
| Dyas, William, Barn |
| Eagle Grove Public Library |
| Eagle Point Park Historic District |
| Earle & LeBosquet Block |
| Earlham Public School |
| Early, John and Elizabeth McMurn, House |
| East 14th Street Historic District |
| East College Street Historic District |
| East Des Moines Commercial Historic District |
| East Des Moines Industrial Historic District |
| East Hill House and Carraige House |
| East Park Band Shell |
| Ebeling, Arthur, House |
| Ebeling, Henry, House |
| Eckert House |
| Edinger, Edward, House |
| Edmundson Park Historic District |
| Edwards, Joseph A. and Lydia A., House |
| Edwards-Swayze House |
| Egloff, William C. & Margaret, House |
| Elbert-Bates House |
| Eldon Carnegie Public Library |
| Eldora Downtown Historic District |
| Eldora Public Library |
| Eldridge, D. C., House |
| Eldridge, Theodore, House |
| Elkader Downtown Historic District |
| Elks-Rogers Hotel |
| Elliott Furniture Company |
| Ellis, Evan F., Farmhouse |
| Ellis, William and Amanda J., Farmstead Historic District |
| Ellsworth-Jones Building |
| Ellsworth-Porter House |
| Elmwood-St. Joseph Municipal Cemetery Historic District |
| Elmwood, The- The Oaks-The Birches |
| Ely School House |
| Emerson School |
| Emmetsburg Public Library |
| Engineering Hall |
| Englert Theatre |
| Epworth School |
| Equitable Life Insurance Company of Iowa Building |
| Ericson Public Library |
| Estes Park Band Shell |
| Etzel, John L., House |
| Evans Block |
| Evans, Edward B. and Nettie E., House |
| Evans, Henry and Elizabeth Adkinson, House |
| Evans Manufacturing Company Building |
| Everist, H. H., House |
| Ewert, Ferdinand, Building |
| Faeth Farmstead and Orchard District |
| Fairfield Public Library |
| Fair Oaks Historic District |
| Fairview Church and Cemetery |
| Farm Creek Historic District |
| Farmers and Merchants Savings Bank |
| Farmers Mutual Reinsurance Company Building |
| Farmers Savings Bank |
| Farmers' State Bank |
| Farm No. 1, Iowa Men's Reformatory |
| Farnsworth, Shepard and Emma, House |
| Farwell, S. S., House |
| Fayette County Courthouse |
| Fay, Pliny and Adelia, House |
| Feller, Robert William Andrew, Farmstead |
| Fellows, James C., House |
| Fenelon Place Elevator |
| Fenelon Place Residential Historic District |
| Fennern, Henry P., House |
| Ficke Block |
| Fifth Street Bluff Historic District |
| Fillmore Block |
| Finch, Fred, House |
| Findley, William, House |
| Fire Station No. 2 |
| Fire Station No. 4 |
| First Avenue East Historic District |
| First Avenue West Historic District |
| First Baptist Church of West Union |
| First Church of Christ Scientist |
| First Church of Christ, Scientist |
Data from United States Park Service and Wikidata
