| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Haddam | city | Connecticut | United States | 41.48 | -72.51 | 98 | |
| Hadlyme | city | Connecticut | United States | 41.42 | -72.41 | 98 | |
| Halakepoka | city | Connecticut | United States | 41.76 | -72.69 | 45 | |
| Hale Court | city | Connecticut | United States | 41.12 | -73.35 | 65 | |
| Halladay Corner | city | Connecticut | United States | 42.01 | -72.64 | 121 | |
| Hallville | city | Connecticut | United States | 41.49 | -72.03 | 91 | |
| Hamburg | city | Connecticut | United States | 41.38 | -72.35 | 62 | |
| Hamden | city | Connecticut | United States | 41.40 | -72.90 | 95 | |
| Hammertown | city | Connecticut | United States | 42.04 | -73.41 | 830 | |
| Hampsted | city | Connecticut | United States | 41.95 | -72.90 | 1023 | |
| Hampton | city | Connecticut | United States | 41.78 | -72.05 | 830 | |
| Hamptonville | city | Connecticut | United States | 41.80 | -72.05 | 830 | |
| Hancock | city | Connecticut | United States | 41.64 | -73.02 | 830 | |
| Hanover | city | Connecticut | United States | 41.64 | -72.07 | 187 | |
| Happyland | city | Connecticut | United States | 41.47 | -72.06 | 29 | |
| Harbor View | city | Connecticut | United States | 41.26 | -72.52 | 19 | |
| Harborview | city | Connecticut | United States | 41.08 | -73.41 | 0 | |
| Harrisons | city | Connecticut | United States | 41.39 | -72.10 | 3 | |
| Harrisville | city | Connecticut | United States | 41.93 | -71.94 | 357 | |
| Hartford | city | Connecticut | United States | 41.76 | -72.69 | 45 | |
| Hartfordas | city | Connecticut | United States | 41.76 | -72.69 | 45 | |
| Hartfordia | city | Connecticut | United States | 41.76 | -72.69 | 45 | |
| Hartfords | city | Connecticut | United States | 41.76 | -72.69 | 45 | |
| Hartland | city | Connecticut | United States | 42.00 | -72.98 | 1125 | |
| Harwinton | city | Connecticut | United States | 41.77 | -73.06 | 931 | |
| Hassunadchuauck (historical) | city | Connecticut | United States | 41.74 | -72.56 | 298 | |
| Hattertown | city | Connecticut | United States | 41.34 | -73.31 | 830 | |
| Hawks Nest | city | Connecticut | United States | 41.27 | -72.47 | 0 | |
| Hawks Nest Beach | city | Connecticut | United States | 41.28 | -72.28 | 0 | |
| Hawleyville | city | Connecticut | United States | 41.43 | -73.36 | 393 | |
| Hawthorne Terrace | city | Connecticut | United States | 41.46 | -73.43 | 830 | |
| Hayden | city | Connecticut | United States | 41.89 | -72.63 | 72 | |
| Hayestown | city | Connecticut | United States | 41.42 | -73.45 | 830 | |
| Haywardville | city | Connecticut | United States | 41.51 | -72.33 | 830 | |
| Hazardville | city | Connecticut | United States | 41.99 | -72.54 | 98 | |
| Hebron | city | Connecticut | United States | 41.66 | -72.37 | 830 | |
| Heilwield Corner | city | Connecticut | United States | 41.51 | -72.25 | 830 | |
| Hemingway Town (historical) | city | Connecticut | United States | 41.31 | -72.88 | 91 | |
| Heritage Village | city | Connecticut | United States | 41.49 | -73.24 | 400 | |
| Hickory Haven | city | Connecticut | United States | 41.63 | -73.39 | 830 | |
| Higganum | city | Connecticut | United States | 41.50 | -72.56 | 98 | |
| High Ridge | city | Connecticut | United States | 41.16 | -73.56 | 830 | |
| High Ridge | city | Connecticut | United States | 41.17 | -73.56 | 830 | |
| Highland | city | Connecticut | United States | 41.57 | -72.74 | 252 | |
| Highland Estates | city | Connecticut | United States | 41.59 | -72.70 | 196 | |
| Highland Park | city | Connecticut | United States | 41.77 | -72.50 | 344 | |
| Highwood (historical) | city | Connecticut | United States | 41.34 | -72.93 | 45 | |
| Higley Village | city | Connecticut | United States | 41.94 | -72.73 | 200 | |
| Hillcrest | city | Connecticut | United States | 41.54 | -73.10 | 830 | |
| Hilliardville | city | Connecticut | United States | 41.78 | -72.56 | 108 | |
| Hoadley Neck | city | Connecticut | United States | 41.26 | -72.73 | 13 | |
| Hockanum | city | Connecticut | United States | 41.74 | -72.63 | 45 | |
| Hockanum Park (historical) | city | Connecticut | United States | 41.16 | -73.34 | 196 | |
| Hollywyle Park | city | Connecticut | United States | 41.46 | -73.46 | 830 | |
| Honeypot Glen | city | Connecticut | United States | 41.52 | -72.89 | 200 | |
| Hope Valley | city | Connecticut | United States | 41.63 | -72.38 | 347 | |
| Hopeville | city | Connecticut | United States | 41.61 | -71.94 | 183 | |
| Hopeville | city | Connecticut | United States | 41.53 | -73.04 | 400 | |
| Hopewell | city | Connecticut | United States | 41.66 | -72.58 | 196 | |
| Hopewell | city | Connecticut | United States | 41.35 | -73.34 | 830 | |
| Horse Heaven | city | Connecticut | United States | 41.62 | -73.28 | 830 | |
| Hoskins | city | Connecticut | United States | 41.90 | -72.79 | 187 | |
| Hotchkissville | city | Connecticut | United States | 41.57 | -73.22 | 298 | |
| Huckleberry Hills Trails | city | Connecticut | United States | 41.80 | -72.90 | 830 | |
| Hungary | city | Connecticut | United States | 41.98 | -72.78 | 314 | |
| Hunting Ridge | city | Connecticut | United States | 41.12 | -73.57 | 291 | |
| Huntington | city | Connecticut | United States | 41.30 | -73.15 | 282 | |
| Huntingtown | city | Connecticut | United States | 41.36 | -73.29 | 830 | |
| Huntsville | city | Connecticut | United States | 41.94 | -73.31 | 997 | |
| Hurds Corner | city | Connecticut | United States | 41.62 | -73.42 | 344 | |
| Hydeville | city | Connecticut | United States | 41.99 | -72.28 | 830 | |
| Hārtforda | city | Connecticut | United States | 41.76 | -72.69 | 45 |