All - Constructed - 1830–1839
| Bride's Hill |
| Brisbois, Michael, House |
| Bronck Farm 13-Sided Barn |
| Brown, C.H., Cottage |
| Brown-Gorman Farm |
| Brownlie, Alexander, House |
| Brownrigg-Harris-Kennebrew House |
| Browns Head Light Station |
| Bryan House |
| Bryant, Charles G., Double House |
| Buffalo Main LIght |
| Building at 42 Edward J. Lopez Avenue |
| Building at 84-96 Hammond Street |
| Bulloch Hall |
| Bunn, Bennett, Plantation |
| Burn, The |
| Burris House and Potawatomi Spring |
| Burwell School |
| Camp Bell |
| Campbell Cemetery |
| Campbell-Whittlesey House |
| Canehill College Building |
| Canton Viaduct |
| Cape St. George Light |
| Captain R. B. Forbes House |
| Carolina Hall |
| Carpenter, Andrew, House |
| Carson-Andrews Mill and Ben F.W. Andrews House |
| Castle, Dr. Andrew, House |
| Cathedral Nuestra Senora de Guadalupe of Ponce |
| Cavellero House |
| Cedar Grove |
| Cedar Grove |
| Cedar Grove Furnace |
| Cedar Grove Place |
| Cedar Island Lighthouse |
| Cedars, The |
| Cedars, The |
| Cedars, The |
| Central High School |
| Champoeg State Park Historic Archeological District |
| Chandler Store |
| Charles Playhouse |
| Charles Street House at No. 131 |
| Chenango Canal Summit Level |
| Cherokee Plantation |
| Christ Episcopal Church |
| Church Inmaculada Conception of Vega Alta |
| Church of San Mateo de Cangrejos of Santurce |
| City Hall |
| City Hospital |
| Clarendon House |
| Claridon Congregational Church |
| Cloverden |
| Clynchdale |
| Cobblestone Historic District |
| Cobb, T.R.R., House |
| Cold Springs Cemetery |
| Colley, Abel, Tavern |
| Colonial Theatre |
| Commercial Bank and Banker's House |
| Community Place |
| Conner, Alexander, House |
| Cottage Farm |
| Cotton Hill |
| Cowherd, Francis, House |
| Crabill, David, House |
| Cumberland and Oxford Canal |
| Cunningham-Coleman House |
| Curtis Island Light |
| Curtis, Paul, House |
| Curtis, William, House |
| Cutter, Gershom, House |
| Cutter, Jefferson, House |
| Davidson House |
| Day, Isham, House |
| Dean, Abiezar, House |
| Denniston House |
| Dial Mill |
| Diamond Historic District |
| Dill House |
| District 7 School |
| District Schoolhouse No. 2 |
| Dixie Plantation House |
| Downtown Wilkesboro Historic District |
| Dowse, Rev. Edmund, House |
| Drennen-Scott House |
| Dry Forks Plantation |
| Dunham's Mill |
| Dwight, Charles Chauncy, House |
| Eagle Hotel |
| East and West Potomac Parks |
| Eastern Point Light Station |
| East Wheeling Historic District |
| Edwards-Fowler House |
| Elgin Academy |
| Ellicott City Station |
| Elms Court |
| Elm Springs |
| Elmwood |
Data from United States Park Service and Wikidata
