7 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Greenwich | Western CT Planning Region | 63,488 |
| Groton | Southeastern CT Planning Region | 37,702 |
| Glastonbury | Capitol Planning Region | 35,286 |
| Guilford | South Central CT Planning Region | 22,020 |
| Griswold | Southeastern CT Planning Region | 11,904 |
| Granby | Capitol Planning Region | 11,683 |
| Goshen | Northwest Hills Planning Region | 3,282 |