| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Kelly Corner | city | Connecticut | United States | 41.87833 | -73.20694 | 1466 | 4418 |
| Kelseytown | city | Connecticut | United States | 41.29667 | -72.53278 | 55 | 19420 |
| Kensington | city | Connecticut | United States | 41.63528 | -72.76917 | 88 | 97330 |
| Kent | city | Connecticut | United States | 41.72472 | -73.4775 | 419 | 3457 |
| Kent Furnace | city | Connecticut | United States | 41.7375 | -73.46972 | 449 | 3457 |
| Kenyonville | city | Connecticut | United States | 41.92944 | -72.08306 | 620 | 3476 |
| Kettletown | city | Connecticut | United States | 41.46472 | -73.19556 | 498 | 15923 |
| Killingly Center | city | Connecticut | United States | 41.83861 | -71.86972 | 337 | 10878 |
| Killingworth | city | Connecticut | United States | 41.35806 | -72.56417 | 364 | 11932 |
| Kings Corner | city | Connecticut | United States | 41.94444 | -72.60278 | 98 | 36261 |
| Kinneytown | city | Connecticut | United States | 41.36667 | -73.0925 | 59 | 55006 |
| Kitemaug | city | Connecticut | United States | 41.44556 | -72.08889 | 3 | 28811 |
| Knollcrest | city | Connecticut | United States | 41.49861 | -73.46694 | 429 | 31609 |
| Knollwood | city | Connecticut | United States | 41.26667 | -72.38389 | 0 | 10611 |
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