City | 2024 Population |
|---|---|
| Madison Center | 1,270 |
| Mamanasco Lake | 417 |
| Manchester | 37,381 |
| Mansfield Center | 1,219 |
| Mashantucket | 78 |
| Mechanicsville | 510 |
| Meriden | 59,942 |
| Middletown | 48,323 |
| Milford (balance) | 50,417 |
| Mill Plain | 1,971 |
| Moodus | 1,732 |
| Moosup | 3,007 |
| Murray | 516 |
| Mystic | 4,543 |