| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ta'agan Point | city | Connecticut | United States | 41.4375 | -73.45361 | 498 | 63267 |
| Taconic | city | Connecticut | United States | 42.03556 | -73.40833 | 797 | 3070 |
| Taftville | city | Connecticut | United States | 41.56972 | -72.04778 | 65 | 34528 |
| Talcottville | city | Connecticut | United States | 41.81861 | -72.50111 | 298 | 69318 |
| Talmadge Hill | city | Connecticut | United States | 41.11861 | -73.49944 | 196 | 102898 |
| Tariffville | city | Connecticut | United States | 41.90861 | -72.76056 | 196 | 20708 |
| Tariffville Center | city | Connecticut | United States | 41.92111 | -72.76417 | 200 | 15832 |
| Taylor Corners | city | Connecticut | United States | 41.44667 | -73.52528 | 800 | 37475 |
| Taylor Town | city | Connecticut | United States | 41.64389 | -72.60639 | 190 | 28117 |
| Terramuggus | city | Connecticut | United States | 41.635 | -72.47083 | 498 | 11262 |
| Terryville | city | Connecticut | United States | 41.67806 | -73.01139 | 639 | 26791 |
| Thames View | city | Connecticut | United States | 41.39444 | -72.10944 | 104 | 56854 |
| Thamesville | city | Connecticut | United States | 41.51 | -72.08861 | 82 | 37095 |
| The Cedars | city | Connecticut | United States | 41.93222 | -73.45556 | 741 | 2700 |
| The Gables | city | Connecticut | United States | 41.94417 | -72.79417 | 196 | 16428 |
| Thomaston | city | Connecticut | United States | 41.67389 | -73.07361 | 400 | 17078 |
| Thompson | city | Connecticut | United States | 41.95861 | -71.86306 | 524 | 11781 |
| Thompson Corner historical | city | Connecticut | United States | 41.27667 | -72.87361 | 39 | 70242 |
| Thompsonville | city | Connecticut | United States | 41.99694 | -72.59944 | 104 | 44866 |
| Thralltown | city | Connecticut | United States | 41.88222 | -72.65528 | 68 | 33417 |
| Tiffany Hill Corner | city | Connecticut | United States | 41.43278 | -72.40611 | 177 | 5430 |
| Titicus | city | Connecticut | United States | 41.29222 | -73.50389 | 662 | 21637 |
| Toilsome Hill | city | Connecticut | United States | 41.20194 | -73.22306 | 101 | 170436 |
| Tokeneke | city | Connecticut | United States | 41.06667 | -73.46667 | 22 | 92183 |
| Tolland | city | Connecticut | United States | 41.87139 | -72.36917 | 600 | 11926 |
| Tolles | city | Connecticut | United States | 41.64417 | -73.01 | 698 | 37631 |
| Tootin' Hills | city | Connecticut | United States | 41.85861 | -72.86639 | 331 | 23098 |
| Topstone | city | Connecticut | United States | 41.29583 | -73.44944 | 446 | 21069 |
| Torringford | city | Connecticut | United States | 41.82111 | -73.08056 | 1059 | 25663 |
| Torrington | city | Connecticut | United States | 41.80056 | -73.12167 | 580 | 32416 |
| Totoket | city | Connecticut | United States | 41.32833 | -72.81389 | 98 | 49524 |
| Town Hill | city | Connecticut | United States | 41.85306 | -72.99944 | 987 | 7760 |
| Town Landing | city | Connecticut | United States | 41.29583 | -72.32833 | 22 | 10227 |
| Town Plot Hill | city | Connecticut | United States | 41.53889 | -73.05333 | 442 | 98444 |
| Tracy | city | Connecticut | United States | 41.50222 | -72.81222 | 98 | 74673 |
| Trails Corner | city | Connecticut | United States | 41.34139 | -72.05778 | 49 | 60927 |
| Trumbull | city | Connecticut | United States | 41.24278 | -73.20111 | 196 | 174395 |
| Tudor Village | city | Connecticut | United States | 41.75083 | -72.61472 | 52 | 76974 |
| Tunxis Hill | city | Connecticut | United States | 41.17611 | -73.24111 | 101 | 170436 |
| Turkey Cobble | city | Connecticut | United States | 41.92889 | -73.19306 | 997 | 2952 |
| Turkey Hill | city | Connecticut | United States | 41.61556 | -72.78611 | 203 | 54129 |
| Turn of River | city | Connecticut | United States | 41.10306 | -73.54861 | 167 | 92680 |
| Twin Lakes | city | Connecticut | United States | 42.01833 | -73.38722 | 823 | 3070 |
| Tyler Lake Heights | city | Connecticut | United States | 41.83778 | -73.27083 | 1246 | 1950 |
| Tylerville | city | Connecticut | United States | 41.4475 | -72.47556 | 52 | 7445 |
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