Iowa - Area of significance: Community Planning
| Adel Public Square Historic District |
| Ashby Manor Historic District |
| Ayrshire Apartments |
| Baker, C. H., Double House |
| Bartlett, Walter M., Double House |
| Bates Park Historic District |
| Bedford Commercial Historic District |
| Bettendorf-Washington School |
| Bever Woods Historic District |
| Black Hawk Hotel |
| Bryn Mawr Apartments |
| Burlington Depot |
| Business Part of Olin Historic District |
| Buxton Historic Townsite |
| Cedar Falls Downtown Historic District |
| Cedar Rapids Central Fire Station |
| Central City Commercial Historic District |
| Central Park-North Main Street Historic District |
| Chautauqua Park Historic District |
| Civic Center Historic District |
| Coggon Public School |
| Collegiate Neighborhood Historic District |
| Colonials Club House |
| Dows Street Historic District |
| Dowtown Perry Historic District |
| Eagle Point Park Historic District |
| Edmundson Park Historic District |
| Ely School House |
| Fair Oaks Historic District |
| Farmhouse, Olmsted Family |
| Fenelon Place Residential Historic District |
| Financial Center Office Building |
| First Avenue East Historic District |
| First Avenue West Historic District |
| First National Bank of Davenport |
| Forest Park Historic District |
| Foster Park Historic District |
| Franklin Apartments |
| Gilbert-Linn Street Historic District |
| Glenwood Archeological District |
| Goddard Bungalow Court Historic District |
| Grand Auditorium and Hotel Block |
| Grand Avenue Historic Commercial District |
| Grant Commercial Historic District |
| Greenwood Park Plats Historic District |
| Hampton Double Square Historic District |
| Harmon and LeValley Northwest Historic District |
| Hayes, William B., House |
| Highland Historic District |
| Hotel Greenfield |
| Hotel Kirkwood |
| Ingersoll Place Plat Historic District |
| Iowa City Downtown Historic District |
| Jefferson Square Commercial Historic District |
| Jefferson Street Historic District |
| Kimballton West 2nd-West 3rd Street Residential District |
| Kimball Village |
| Kingman Place Historic District |
| Knoxville WPA Athletic Field Historic District |
| Kromer Flats |
| Lincoln-Fairview Historic District |
| Linden Heights Historic District |
| Longfellow Historic District |
| Maine, The |
| Marion Carnegie Public Library |
| Mason City Public Library |
| Masonic Temple |
| May's Island Historic District |
| McGregor Commercial Historic District |
| Melrose Historic District |
| Middlesex Plat Historic District |
| Mines of Spain Area Rural Community Archeological District |
| New Lawn, The |
| New Providence Building Association Stores |
| North Fellows Historic District |
| North Grand Avenue Residential Historic District |
| North Grinnell Historic District |
| Oaklands, The, Historic District |
| Old Town Historic District |
| Osage Commercial Historic District |
| Park-to-Park Residential Historic District |
| Pilotburg Church |
| Polk County Homestead and Trust Company Addition Historic District |
| Prospect Park Second Plat Historic District |
| Redmond Park-Grande Avenue Historic District |
| Renken, Renke and Wubke, House |
| Riverview Park Plat Historic District |
| Rock Crest-Rock Glen Historic District |
| Rose Hill Historic District |
| Sanford, Arthur and Stella, House |
| Scotch Grove Historic District |
| Second and Third Avenue Historic District |
| Shaw, Col. William T. and Elizabeth C., House |
| Shores-Mueller Company |
| Sioux City Fire Station Number 3 |
| Sixth and Forest Historic District |
| Smouse, Winfield, House |
| South 8th Street Historic District |
| State Center Commercial Historic District |
| Sturdevant Southwest Historic District |
Data from United States Park Service and Wikidata
