All - Architectural style - Federal architecture
| Cedar Lawn |
| Cedars, The |
| Cedars, The |
| Center Meetinghouse |
| Central Congregational Church |
| Central House |
| Centre Presbyterian Church |
| Cessford |
| Chadwick-Brittan House |
| Chalfant, Mordecai, House |
| Chalmers Institute |
| Chaloner House |
| Chalybeate Springs Hotel |
| Chamberlain, Benjamin, House |
| Chamberlain, Daniel, House |
| Chambers, Maxwell, House |
| Chamounix |
| Champion-Shepherdson House |
| Champlin, Peleg, House |
| Champ, Thomas, House |
| Chanceford |
| Chandler-Hidden House |
| Chandler, John, House |
| Chapel Hill |
| Chapel Hill |
| Chapel Hill |
| Chapin, Thaddeus, House |
| Charles Street House at No. 131 |
| Chase, Hezekiah, House |
| Chase, Squire, House |
| Chatham Street Row |
| Chattooga Academy |
| Chaumont House |
| Checkerboard Inn |
| Chene, Alexander, House |
| Cherrydale |
| Chester Hall |
| Chestnut Ridge |
| Chickering House |
| Chiles, William, House |
| China Grove |
| Chittenden, Martin, House |
| Choate, Rufus, House |
| Chretien Point Plantation |
| Chrisman, George, House |
| Christ Church Cathedral |
| Christ Evangelical and Reformed Church |
| Church on the Hill |
| Church-Waddel-Brumby House |
| City Hall |
| City Tavern |
| Clapham's Ferry |
| Clapp, Charles Q., Block |
| Clapp, Silas, House |
| Claremont |
| Clarendon Congregational Church |
| Clark, Ansel, House |
| Clark, Benjamin, House |
| Clark-Dearstyne-Miller Inn |
| Clark-Eames House |
| Clark, Edmund and Rachel, Homestead |
| Clarke, Luther, House |
| Clarke, Pitt, House |
| Clark, Gov. James A., Mansion |
| Clark-Keith House |
| Clarkson House |
| Clarkson-Knowles Cottage |
| Claughton-Wright House |
| Claybrook House |
| Clay County Savings Association Building |
| Clay Hill |
| Clayville Tavern |
| Cleage, Samuel, House |
| Cleale, Joseph, House |
| Clement, Jesse, House |
| Cleridge |
| Clermont |
| Clermont Academy |
| Cleveland, Ephraim, House |
| Cleveland Hall |
| Cliffside |
| Clifton |
| Cline's Church of the United Brethren in Christ |
| Clinton House |
| Cloud, Abner, House |
| Cobblestone Farmhouse at 1111 Stone Church Roach |
| Cock-Cornelius House |
| Cockerill House |
| Cockey-Jamison-Hendrickson House and Store |
| Cocks, Isaac, House |
| Coeur d'Alene Federal Building |
| Coffing, John C., House |
| Coffin, Levi, House |
| Coffin, Stephen, House |
| Coiner-Quesenbery House |
| Colburn House State Historic Site |
| Cold Saturday |
| Cold Spring Presbyterian Church |
| Cole, Benjamin, House |
| Cole Cobblestone Farmhouse |
Data from United States Park Service and Wikidata
