7 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Greenwich | Western CT Planning Region | 65,798 |
| Groton | Southeastern CT Planning Region | 40,574 |
| Glastonbury | Capitol Planning Region | 35,901 |
| Guilford | South Central CT Planning Region | 22,486 |
| Granby | Capitol Planning Region | 12,665 |
| Griswold | Southeastern CT Planning Region | 11,779 |
| Goshen | Northwest Hills Planning Region | 3,325 |