| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Haddam | city | Connecticut | United States | 41.47722 | -72.5125 | 98 | 7428 |
| Hadlyme | city | Connecticut | United States | 41.42028 | -72.40694 | 98 | 5430 |
| Hale Court | city | Connecticut | United States | 41.12139 | -73.35139 | 65 | 41019 |
| Halladay Corner | city | Connecticut | United States | 42.01167 | -72.6425 | 121 | 35451 |
| Hallville | city | Connecticut | United States | 41.49333 | -72.03361 | 91 | 18012 |
| Hamburg | city | Connecticut | United States | 41.38444 | -72.35056 | 62 | 5597 |
| Hamden | city | Connecticut | United States | 41.39583 | -72.89722 | 82 | 58803 |
| Hammertown | city | Connecticut | United States | 42.04306 | -73.41306 | 787 | 2815 |
| Hampsted | city | Connecticut | United States | 41.95028 | -72.89583 | 1023 | 6807 |
| Hampton | city | Connecticut | United States | 41.78389 | -72.05528 | 649 | 3948 |
| Hamptonville | city | Connecticut | United States | 41.79667 | -72.04722 | 485 | 3403 |
| Hancock | city | Connecticut | United States | 41.63639 | -73.02417 | 698 | 37631 |
| Hanover | city | Connecticut | United States | 41.6425 | -72.06583 | 187 | 8991 |
| Happyland | city | Connecticut | United States | 41.47278 | -72.065 | 29 | 32620 |
| Harbor View | city | Connecticut | United States | 41.26333 | -72.51583 | 19 | 16183 |
| Harborview | city | Connecticut | United States | 41.08194 | -73.40917 | 0 | 43499 |
| Harrisons | city | Connecticut | United States | 41.38667 | -72.10083 | 3 | 56854 |
| Harrisville | city | Connecticut | United States | 41.92611 | -71.93722 | 357 | 11931 |
| Hartford | city | Connecticut | United States | 41.76361 | -72.68556 | 45 | 205196 |
| Hartland | city | Connecticut | United States | 41.99611 | -72.98 | 1125 | 3039 |
| Harwinton | city | Connecticut | United States | 41.77111 | -73.06028 | 931 | 18172 |
| Hassunadchuauck historical | city | Connecticut | United States | 41.73972 | -72.56222 | 298 | 65551 |
| Hattertown | city | Connecticut | United States | 41.34111 | -73.30944 | 498 | 16337 |
| Hawks Nest | city | Connecticut | United States | 41.27 | -72.46917 | 0 | 12339 |
| Hawks Nest Beach | city | Connecticut | United States | 41.28333 | -72.28389 | 0 | 5389 |
| Hawleyville | city | Connecticut | United States | 41.4275 | -73.35556 | 393 | 23363 |
| Hawthorne Terrace | city | Connecticut | United States | 41.45889 | -73.43056 | 597 | 30889 |
| Hayden | city | Connecticut | United States | 41.88917 | -72.62972 | 72 | 33417 |
| Hayestown | city | Connecticut | United States | 41.42 | -73.45417 | 403 | 63267 |
| Haywardville | city | Connecticut | United States | 41.51111 | -72.32583 | 436 | 7926 |
| Hazardville | city | Connecticut | United States | 41.98722 | -72.54528 | 98 | 47761 |
| Hebron | city | Connecticut | United States | 41.65778 | -72.36639 | 524 | 8301 |
| Heilwield Corner | city | Connecticut | United States | 41.51278 | -72.25111 | 485 | 6597 |
| Hemingway Town historical | city | Connecticut | United States | 41.31389 | -72.87861 | 91 | 168862 |
| Heritage Village | city | Connecticut | United States | 41.48556 | -73.23833 | 400 | 16174 |
| Heritage Village | city | Connecticut | United States | 41.48639 | -73.23306 | 255 | 16174 |
| Hickory Haven | city | Connecticut | United States | 41.625 | -73.39472 | 505 | 16643 |
| Higganum | city | Connecticut | United States | 41.49694 | -72.5575 | 98 | 8142 |
| High Ridge | city | Connecticut | United States | 41.16889 | -73.56417 | 498 | 19370 |
| High Ridge | city | Connecticut | United States | 41.16417 | -73.56389 | 498 | 36554 |
| Highland | city | Connecticut | United States | 41.56556 | -72.73861 | 252 | 39712 |
| Highland Estates | city | Connecticut | United States | 41.59444 | -72.70194 | 196 | 52695 |
| Highland Park | city | Connecticut | United States | 41.765 | -72.49639 | 344 | 47844 |
| Highwood historical | city | Connecticut | United States | 41.33833 | -72.93444 | 45 | 146553 |
| Higley Village | city | Connecticut | United States | 41.93694 | -72.72639 | 200 | 15778 |
| Hillcrest | city | Connecticut | United States | 41.54417 | -73.1025 | 498 | 60773 |
| Hilliardville | city | Connecticut | United States | 41.78417 | -72.55583 | 108 | 82398 |
| Hoadley Neck | city | Connecticut | United States | 41.26278 | -72.73306 | 13 | 17363 |
| Hockanum | city | Connecticut | United States | 41.74056 | -72.63417 | 45 | 138287 |
| Hockanum Park historical | city | Connecticut | United States | 41.16472 | -73.34278 | 196 | 50632 |
| Hollywyle Park | city | Connecticut | United States | 41.46389 | -73.45972 | 429 | 31609 |
| Honeypot Glen | city | Connecticut | United States | 41.5225 | -72.88694 | 200 | 40006 |
| Hope Valley | city | Connecticut | United States | 41.63361 | -72.37556 | 347 | 8867 |
| Hopeville | city | Connecticut | United States | 41.53139 | -73.03583 | 400 | 108314 |
| Hopeville | city | Connecticut | United States | 41.6125 | -71.93889 | 183 | 12142 |
| Hopewell | city | Connecticut | United States | 41.34722 | -73.33694 | 613 | 20397 |
| Hopewell | city | Connecticut | United States | 41.66444 | -72.58389 | 196 | 28117 |
| Horse Heaven | city | Connecticut | United States | 41.61722 | -73.28417 | 797 | 5856 |
| Hoskins | city | Connecticut | United States | 41.90028 | -72.78639 | 187 | 20708 |
| Hotchkissville | city | Connecticut | United States | 41.56722 | -73.2175 | 298 | 9434 |
| Huckleberry Hills Trails | city | Connecticut | United States | 41.79722 | -72.90389 | 419 | 25058 |
| Hungary | city | Connecticut | United States | 41.97667 | -72.77944 | 282 | 11289 |
| Hunting Ridge | city | Connecticut | United States | 41.12389 | -73.5725 | 291 | 92680 |
| Huntington | city | Connecticut | United States | 41.29639 | -73.14667 | 282 | 48526 |
| Huntingtown | city | Connecticut | United States | 41.35806 | -73.28583 | 485 | 19627 |
| Huntsville | city | Connecticut | United States | 41.94472 | -73.31306 | 997 | 1612 |
| Hurds Corner | city | Connecticut | United States | 41.62194 | -73.4225 | 344 | 15956 |
| Hydeville | city | Connecticut | United States | 41.99306 | -72.27667 | 816 | 8200 |
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