Iowa - Criteria: A (event)
| Elliott Furniture Company |
| Elmwood-St. Joseph Municipal Cemetery Historic District |
| Ely School House |
| Emerson Hough Elementary School |
| Emerson School |
| Engineering Hall |
| Englert Theatre |
| Epworth School |
| Equitable Life Insurance Company of Iowa Building |
| Ericson Public Library |
| Estes Park Band Shell |
| Evans, Henry and Elizabeth Adkinson, House |
| Evans Manufacturing Company Building |
| Everett School |
| Evergreen Ridge Stock Farm Historic District |
| Faeth Farmstead and Orchard District |
| Fairfield Public Library |
| Farmers Mutual Reinsurance Company Building |
| Farmers Savings Bank |
| Farmers' State Bank |
| Farm No. 1, Iowa Men's Reformatory |
| Fay, Pliny and Adelia, House |
| Fenelon Place Elevator |
| Fenelon Place Residential Historic District |
| Fifth Street Bluff Historic District |
| Fire Station No. 2 |
| First Bible Missionary Church |
| First Christian Church |
| First Johnson County Asylum |
| First Methodist Episcopal Church |
| First National Bank |
| First National Bank Building |
| First National Bank of Davenport |
| First Welsh Congregational Church |
| Fish and Game Pavilion and Aquarium |
| Fitch, F.W., Company Historic District |
| Florence-Council On The Iowa Site |
| Floyd County Court House |
| Flynn Farm, Mansion, and Barn |
| Flynn-Griffin Building |
| Fobes Octagon Barn |
| Folkert Mound Group |
| Ford, W. T., House |
| Forest Grove School No. 5 |
| Forest Park Historic District |
| Fort Atkinson Historic District |
| Fort Des Moines Provisional Army Officer Training School |
| Fort Dodge Downtown Historic District |
| Fort Dodge Junior High School |
| Fort Dodge Senior High School |
| Fort Madison Downtown Commercial Historic District |
| Fort Madison High School |
| Foster Park Historic District |
| Four Mounds Estate Historic District |
| Four Mounds Site |
| Fourth Street Historic District |
| Fowler Company Building, The |
| Franklin Apartments |
| Franklin County G. A. R. Soldiers' Memorial Hall |
| Franklin County Sheriff's Residence and Jail |
| Franklin Hotel |
| Franklin Printing House |
| Franklin Regular Baptist Church |
| Frantz Round Barn |
| Frick's Tavern |
| Fryer, O.F. and Lulu E., House |
| Fulton, Fred and Rosa, Barn |
| Gannon, M. V., House |
| G.A.R. Memorial Hall |
| Garner, J.W., Building |
| Garst, Roswell and Elizabeth, Farmstead Historic District |
| Gehlen House and Barn |
| Geode State Park, Civilian Conservation Corps Area |
| GEO. M. VERITY |
| Germania-Miller/Standard Hotel |
| German Methodist Episcopal Church |
| Gilbert-Linn Street Historic District |
| Gobble and Heer-Spurgeons Building |
| Goddard Bungalow Court Historic District |
| Goldenrod Schoolhouse |
| Gordon-Van Tine Company Historic District |
| Gracehill Moravian Church and Cemetery |
| Grand Auditorium and Hotel Block |
| Grand Avenue Historic Commercial District |
| Grand Mound Town Hall and Waterworks Historic District |
| Grand Opera House |
| Grandview Park Music Pavilion |
| Grant Commercial Historic District |
| Grant Vocational High School |
| Great Northern Railway Steam Locomotive No. 1355 and Tender 1451 |
| Greek Orthodox Church of Saint George |
| Greenfield Public Square Historic District |
| Green, William, House |
| Greenwood Cemetery Chapel |
| Greenwood Park Plats Historic District |
| Grimes Octagon Barn |
| Grinnell Herald Building |
| Grinnell Historic Commercial District |
| Grocers Wholesale Company Building |
| Gruwell and Crew General Store |
Data from United States Park Service and Wikidata
