All - Constructed - 1840–1849
| Cassina Point |
| Castro, Jose, House |
| Cathedral of Saints Peter and Paul |
| Cave Hill Cemetery |
| Cavendish Universalist Church |
| Cedars Plantation |
| Chancellor House |
| Chandeleur Light |
| Chandler, Gen. Samuel, House |
| Cherie Quarters Cabins |
| Cherokee Female Seminary |
| Cherry Hill |
| Childress-Ray House |
| Church, Benjamin, House |
| Church of St. James the Less |
| Church of the Epiphany |
| Church of the Holy Apostles |
| Church of the Holy Communion and Buildings |
| Church of the Holy Innocents and Rectory |
| Church of the Transfiguration and Rectory |
| Clarke-Harrell-Burson House |
| Clark, Jonathan, House |
| Clark-Northrup House |
| Clough Meeting House |
| Club Harbor |
| Coggin, Gilman, House |
| Colburn, Sarah Foster, House |
| Colburn School |
| Cold Water Bridge |
| Cole-Evans House |
| College Church |
| Collins, Frederick, House |
| Commercial House |
| Conkey House |
| Conway Cemetery |
| Coolidge, Calvin, Homestead District |
| Copper Harbor Light Station |
| Cotesworth |
| Cottage Gardens |
| Cotton House |
| Coulsontown Cottages Historic District |
| Courier Building, The |
| Crane, Gerard, House |
| Crossover Island Light Station |
| Cuba Cemetery |
| Cullum Mansion |
| Curtin, Jeremiah, House |
| Curtis, Gen. Samuel R., House |
| Cushman, Abial, Store |
| Cushway, Benjamin, House |
| Dallas County Courthouse |
| Dame School |
| Damon, Lowell, House |
| Damon, Washington, House |
| Dana, James Dwight, House |
| Dansereau House |
| Darling, James Alexis, House |
| Dauphine Hotel |
| Dautreuil House |
| Davey, Randall, House |
| Davis, Reuben, House |
| Davis, Seth, House |
| Deane-Williams House |
| Dean, Silas, House |
| Delaney-Edwards House |
| D'Evereux |
| Dickinson House |
| District No. 2 School |
| Dodge, Edward, House |
| Donnell, Robert, House |
| Dorvin House |
| Double Cabins |
| Drane, Col. James, House |
| Driver, David and Catherine, Farm |
| Dublin Christian Church |
| Duck Creek Aqueduct |
| Dunbar-Stearns House |
| Duvall-Ash Farmstead |
| Easton Cemetery |
| Edwards, David, House |
| Edwards House |
| Egyptian Building |
| El Dorado Plantation House |
| Eleutherian College |
| Elgin |
| Elliott, Luther, House |
| Empire House |
| Emporium |
| Enfield Center Town House |
| Erie Canal: Second Genesee Aqueduct |
| Essex Club |
| Estabrook, Rufus, House |
| Estate Mount Victory |
| Eumenean Hall, Davidson College |
| Eureka Masonic College |
| Evergreen Cemetery |
| Exchange Building |
| Execution Rocks Light Station |
| Fairfax House |
| Fanckboner-Nichols Farmstead |
Data from United States Park Service and Wikidata
