7 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Hartford | Capitol Planning Region | 122,959 |
| Hamden | South Central CT Planning Region | 61,708 |
| Hebron | Capitol Planning Region | 9,384 |
| Haddam | Lower CT River Valley Planning Region | 8,824 |
| Harwinton | Northwest Hills Planning Region | 5,832 |
| Hartland | Northwest Hills Planning Region | 1,939 |
| Hampton | Northeastern CT Planning Region | 1,795 |