Connecticut - Area of significance: Social History
| Academy Hall |
| Academy of Our Lady of Mercy at Lauralton Hall |
| Acadian House |
| Aldrich Free Public Library |
| Alsop, Richard IV, House |
| American Legion Forest CCC Shelter |
| Andover Center Historic District |
| Ansonia Library |
| Austin, A. Everett, House |
| Backus, Nathaniel, House |
| Barlow, Aaron, House |
| Barnum Museum |
| Belden, Horace, School and Central Grammar School |
| Belltown Historic District |
| Benedict, Francis Jr., House |
| Benedict House and Shop |
| Bishop, Peyton Randolph, House |
| Blackman, Elisha, Building |
| Black Rock Gardens Historic District |
| Bowen, Henry C., House |
| Bowen, Mathew, Homestead |
| Bradley Edge Tool Company Historic District |
| Bradley-Hubbell House |
| Breuer, Marcel, House II |
| Bridge No. 1603 |
| Bridge No. 1604 |
| Bridge No. 1605 |
| Bridge No. 1860 |
| Bridgewater Center Historic District |
| Bristol Girls' Club |
| Broad Street-Davis Park Historic District |
| Broad Street Green Historic District |
| Broad Street Historic District |
| Bronson, Josiah, House |
| Brooklyn Green Historic District |
| Burnett's Corner Historic District |
| Bushnell Park |
| Butler-McCook Homestead |
| Cady-Copp House |
| Camp Bethel |
| Canaan Pine Grove Association Camp Meeting |
| Canoe Brook Historic District |
| Canterbury Center Historic District |
| Case Brothers Historic District |
| Cedar Hill Cemetery |
| Center Burying Yard, Old |
| Center Street Cemetery |
| Charter Oak Firehouse |
| Charter Oak Place |
| Chelsea Parade Historic District |
| Children's Village of the Hartford Orphan Asylum |
| Church of the Holy Name |
| Civic Institutions Historic District |
| Clark Farm Tenant House Site |
| Clay Hill Historic District |
| Collinsville Historic District |
| Colt Industrial District |
| Comstock, Abijah, House |
| Congregation Mishkan Israel |
| Connecticut General Hospital for the Insane |
| Connecticut Valley Hospital Cemetery |
| Cook, John, House |
| Cowles, Gen. George, House |
| Crandall, Prudence, House |
| Crawford, George W., Manor |
| Cream Hill Shelter |
| Darling Family Farmstead and Tavern |
| Davenport, Deacon John, House |
| Day House |
| Deshon-Allyn House |
| Downtown Main Street Historic District |
| Downtown North Historic District |
| Downtown Norwich Historic District |
| Dudley, Jedidiah, House |
| Eastern Point Historic District |
| East Granby Historic District |
| East Haven Green Historic District |
| East Windsor Academy |
| Elmore Houses |
| Endee Manor Historic District |
| Enfield Canal |
| Enfield Carnegie Library |
| Enfield Shakers Historic District |
| Eno Memorial Hall |
| Eolia-Harkness Estate |
| Erwin Home for Worthy and Indigent Women |
| Esperanza |
| Fairfield County Jail |
| Fairfield Hills Campus Historic District |
| Farmington Historic District |
| Federal Hill Historic District |
| First Church of Christ |
| Ford, Elinor and Sherman, House |
| Fourth Congregational Church |
| Fourth District School |
| Gales Ferry Historic District No. 2 |
| Gateway Village Historic District |
| Gillette, Francis, House |
| Glover House |
| Glover, John, House |
Data from United States Park Service and Wikidata
