7 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Hartford | Capitol Planning Region | 119,583 |
| Hamden | South Central CT Planning Region | 59,482 |
| Hebron | Capitol Planning Region | 9,206 |
| Haddam | Lower CT River Valley Planning Region | 8,973 |
| Harwinton | Northwest Hills Planning Region | 5,704 |
| Hartland | Northwest Hills Planning Region | 1,918 |
| Hampton | Northeastern CT Planning Region | 1,748 |