| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Danbury | city | Connecticut | United States | 41.39472 | -73.45444 | 439 | 69014 |
| Daniels Mill | city | Connecticut | United States | 41.16944 | -73.47333 | 301 | 32852 |
| Danielson | city | Connecticut | United States | 41.8025 | -71.88639 | 275 | 16121 |
| Darien | city | Connecticut | United States | 41.07861 | -73.46972 | 98 | 92183 |
| Davidsons Corner | city | Connecticut | United States | 41.42861 | -72.97667 | 538 | 23504 |
| Dayville | city | Connecticut | United States | 41.84639 | -71.88806 | 259 | 12868 |
| Deaconwood | city | Connecticut | United States | 41.50167 | -72.92222 | 170 | 38343 |
| Deep River | city | Connecticut | United States | 41.38556 | -72.43611 | 62 | 10808 |
| Dempsey Landing | city | Connecticut | United States | 41.7125 | -73.2275 | 898 | 5879 |
| Derby | city | Connecticut | United States | 41.32056 | -73.08944 | 42 | 62100 |
| Devon | city | Connecticut | United States | 41.20222 | -73.10222 | 36 | 78993 |
| Doaneville | city | Connecticut | United States | 41.57167 | -71.87556 | 223 | 5580 |
| Dodgingtown | city | Connecticut | United States | 41.37917 | -73.35667 | 498 | 26275 |
| Dolphin Cove | city | Connecticut | United States | 41.02583 | -73.54972 | 0 | 82878 |
| Dorrville historical | city | Connecticut | United States | 41.61083 | -71.97417 | 183 | 12177 |
| Double Beach | city | Connecticut | United States | 41.25806 | -72.8325 | 0 | 41015 |
| Drakeville | city | Connecticut | United States | 41.855 | -73.15778 | 787 | 21543 |
| Duck Island Roads | city | Connecticut | United States | 41.25806 | -72.51 | 0 | 16183 |
| Durham | city | Connecticut | United States | 41.48167 | -72.68167 | 200 | 15791 |
| Durham Center | city | Connecticut | United States | 41.47472 | -72.68083 | 206 | 15791 |
| Dutch Point Colony subdivision | city | Connecticut | United States | 41.75528 | -72.67083 | 45 | 205196 |
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