| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Jericho | city | Connecticut | United States | 41.33667 | -72.29889 | 98 | 8607 |
| Jewett City | city | Connecticut | United States | 41.60667 | -71.98139 | 131 | 12177 |
| Jewitt Corner | city | Connecticut | United States | 41.43556 | -72.34083 | 82 | 4328 |
| Johnson Park subdivision | city | Connecticut | United States | 41.7125 | -72.21472 | 285 | 24970 |
| Johnsons Corner | city | Connecticut | United States | 41.24111 | -73.10778 | 3 | 84116 |
| Jordan | city | Connecticut | United States | 41.33917 | -72.14472 | 62 | 46209 |
| Joyceland historical | city | Connecticut | United States | 41.51528 | -73.47417 | 475 | 15885 |
| Joyceville | city | Connecticut | United States | 42.04861 | -73.42611 | 741 | 2485 |
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