Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Hartford (city), CT | 121,054 |
| 2 | New Britain (city), CT | 74,135 |
| 3 | West Hartford (CDP), CT | 64,083 |
| 4 | Bristol (city), CT | 60,833 |
| 5 | East Hartford (CDP), CT | 51,045 |
| 6 | Manchester (CDP), CT | 36,379 |
| 7 | Torrington (city), CT | 35,515 |
| 8 | Newington (CDP), CT | 30,536 |
| 9 | Wethersfield (CDP), CT | 27,298 |
| 10 | Kensington (CDP), CT | 9,962 |
| 11 | Glastonbury Center (CDP), CT | 8,459 |
| 12 | Winsted (CDP), CT | 7,192 |
| 13 | Simsbury Center (CDP), CT | 6,268 |
| 14 | Terryville (CDP), CT | 5,202 |
| 15 | Collinsville (CDP), CT | 3,721 |
| 16 | Northwest Harwinton (CDP), CT | 3,158 |
| 17 | Weatogue (CDP), CT | 2,906 |
| 18 | Blue Hills (CDP), CT | 2,762 |
| 19 | West Simsbury (CDP), CT | 2,521 |
| 20 | Salmon Brook (CDP), CT | 2,428 |