New Jersey - Area of significance: Architecture
| Cavarly Cottage |
| Cedar Bridge Tavern |
| Centenary Collegiate Institute |
| Centennial House |
| Central Avenue Commercial Historic District |
| Central Presbyterian Church |
| Central Railroad of New Jersey |
| Central Trust Company |
| Chamberlain, George, House |
| Chapman, J. M., House |
| Chateau Bleu Motel |
| Chesterford School |
| Chester House Inn |
| Chew, Jesse, House |
| Christ Church |
| Christ Church (Episcopal), Shrewsbury |
| Christ Episcopal Church |
| Christie-Parsels House |
| Church in the Glen, The |
| Church of Our Lady of Grace |
| Church of the Ascension |
| Church of the Holy Communion |
| Church of the Holy Innocents |
| Church of the Immaculate Conception |
| Church of the Madonna |
| Church Street School |
| Clark, Benjamin, House |
| Clarksburg Methodist Episcopal Church |
| Clarksburg School |
| Clark, William, House |
| Clay, Henry and Bock and Company Cigar Factory |
| Cliffside Hose Company No. 4 |
| Clinton Historic District |
| Coachman, Owen, House |
| Cokesbury Historic District |
| Cold Spring Grange Hall |
| Cold Spring Presbyterian Church |
| Cole-Allaire House |
| Cole Landing Tavern |
| Coles, Samuel, House |
| Collings-Knight Homestead |
| Collingswood Residential Historic District |
| Collingswood Theatre |
| Collins and Pancoast Hall |
| Collins House |
| Collins, Isaac, House |
| Community of St. John Baptist |
| Concklin-Sneden House |
| Condict, Dr. Lewis, House |
| Condit, Stephen, House |
| Congregational Church |
| Converse Cottage |
| Cooke, Dr. Robert W., Medical Office |
| Cooke, Frederick William, Residence |
| Cook, Ellis, House |
| Cooper, Benjamin, Farm |
| Cooper, Gen. Nathan, Mansion |
| Cooper Grant Historic District |
| Cooper, Joseph, House |
| Cooper Library in Johnson Park |
| Cooper Street Historic District |
| Cooper, Thunise & Richard, House |
| Corson, John, Jr., House Site |
| Court Street School |
| Covered Bridge Historic District |
| Coward-Hendrickson House |
| Coward-Smith House |
| Cox, Mary Etta, House |
| Craft-Clausen House |
| Craftsman Farms |
| Craig, Moses, Limekilns |
| Cranbury Historic District |
| Crane, Israel, House |
| Crane-Phillips House |
| Crawford House |
| Crescent Area Historic District |
| Cresse-Holmes House Historic District |
| Crim-Tice House |
| Crocker-McMillin Mansion-Immaculate Conception Seminary |
| Cropwell Friends Meeting House |
| Crosswicks |
| Cruse-Hossington House |
| Cutler Homestead |
| Danforth Memorial Library |
| Darlington Schoolhouse |
| Dart's Mill Historic District |
| Davenport-Demarest House |
| Dawlis Mill-Spring Mill Historic District |
| Day Street Public School |
| Debaun-Demarest House |
| Debaun, Isaac, House |
| De Camp, John, House |
| De Clark, William, House |
| Deerfield Presbyterian Church |
| De Gray House |
| Delaware Historic District |
| Delaware Lackawanna and Western Railroad Station |
| Delaware, Lackawanna and Western Railroad Station |
| Delaware, Lackawanna and Western Railroad Station |
| Demaree, Abram, House |
Data from United States Park Service and Wikidata
