Connecticut - Area of significance: Politics/Government
| Barlow, Boce W., Jr., House |
| Bridgeport City Hall |
| Brooklyn Green Historic District |
| Buckingham, William A., House |
| Camp, Moses, House |
| Central Village Historic District |
| Columbia Green Historic District |
| Connecticut Statehouse |
| Connecticut State Library and Supreme Court Building |
| Danielson Main Street Historic District |
| Deane, Silas, House |
| Deep River Town Hall |
| Downtown Norwich Historic District |
| Downtown Torrington Historic District |
| East Haddam Historic District |
| Ellsworth, Oliver, Homestead |
| Elm Street Historic District |
| Fairfield County Courthouse |
| Fairfield Historic District |
| First Church of Christ |
| Fyler-Hotchkiss Estate |
| Gillette, Francis, House |
| Goshen Historic District |
| Gov. Smith Homestead |
| Greenfield Hill Historic District |
| Greenwich Town Hall |
| Gurleyville Historic District |
| Hampton Hill Historic District |
| Hebron Center Historic District |
| Holcomb, Nathaniel, III, House |
| Huntington, Gov. Samuel, House |
| Huntington, Samuel, Birthplace |
| Johnson, Wilfred X., House |
| Kendrick, John, House |
| Knowlton Memorial Hall |
| Lebanon Green Historic District |
| Leffingwell Inn |
| Little Haddam Historic District |
| Lounsbury, Phineas Chapman, House |
| Main Street Bridge |
| Main Street Historic District |
| Main Street Historic District |
| Marlborough Tavern |
| Mather, Stephen Tyng, House |
| Middle Haddam Historic District |
| Municipal Building |
| New London County Courthouse |
| Nicoll, Caroline, House |
| Norwalk City Hall |
| Norwich Town Hall |
| Old Newgate Prison |
| Old Town Hall |
| Old Wethersfield Historic District |
| Pitkin, Elisha, House |
| Pomfret Town House |
| Rocky Hill Center Historic District |
| Roxbury Center |
| Russell, Edward Augustus, House |
| Sanford-Humphreys House |
| Sharon Historic District |
| Stafford Hollow Historic District |
| Stevenson Dam Hydroelectric Plant |
| Swain-Harrison House |
| Treadwell House |
| Trumbull, John, Birthplace |
| Tunxis Hose Firehouse |
| Turn-of-River Bridge |
| Union Green Historic District |
| U. S. Post Office and Federal Building |
| War Office |
| Washington School |
| Waterbury Municipal Center Complex |
| White-Overton-Callander House |
| Whittlesey, Ambrose, House |
| Williams, William, House |
| Windham Center Historic District |
| Wolcott, Oliver, House |
Data from United States Park Service and Wikidata
