UpAlphabetical listing of Places in Connecticut
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Danbury | city | Connecticut | United States | 41.39 | -73.45 | 400 | |
| Daniels Mill | city | Connecticut | United States | 41.17 | -73.47 | 301 | |
| Danielson | city | Connecticut | United States | 41.80 | -71.89 | 275 | |
| Darien | city | Connecticut | United States | 41.08 | -73.47 | 98 | |
| Davidsons Corner | city | Connecticut | United States | 41.43 | -72.98 | 830 | |
| Dayville | city | Connecticut | United States | 41.85 | -71.89 | 259 | |
| Deaconwood | city | Connecticut | United States | 41.50 | -72.92 | 170 | |
| Deep River | city | Connecticut | United States | 41.39 | -72.44 | 62 | |
| Deep River Center | city | Connecticut | United States | 41.39 | -72.44 | 62 | |
| Dempsey Landing | city | Connecticut | United States | 41.71 | -73.23 | 898 | |
| Derby | city | Connecticut | United States | 41.32 | -73.09 | 42 | |
| Devon | city | Connecticut | United States | 41.20 | -73.10 | 36 | |
| Doaneville | city | Connecticut | United States | 41.57 | -71.88 | 223 | |
| Dodgingtown | city | Connecticut | United States | 41.38 | -73.36 | 830 | |
| Dolphin Cove | city | Connecticut | United States | 41.03 | -73.55 | 0 | |
| Dorrville (historical) | city | Connecticut | United States | 41.61 | -71.97 | 183 | |
| Double Beach | city | Connecticut | United States | 41.26 | -72.83 | 0 | |
| Drakeville | city | Connecticut | United States | 41.86 | -73.16 | 830 | |
| Duck Island Roads | city | Connecticut | United States | 41.26 | -72.51 | 0 | |
| Durham | city | Connecticut | United States | 41.48 | -72.68 | 200 | |
| Durham Center | city | Connecticut | United States | 41.47 | -72.68 | 206 | |
| Dutch Point Colony | city | Connecticut | United States | 41.76 | -72.67 | 45 | |
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