City | 2024 Population |
|---|---|
| Baldwinville | 2,435 |
| Barnstable Town | 49,978 |
| Barre | 504 |
| Becket | 1,921 |
| Bedford | 14,089 |
| Belchertown | 2,830 |
| Bellingham | 5,056 |
| Belmont | 26,879 |
| Berkley | 6,771 |
| Berlin | 5,211 |
| Bernardston | 2,104 |
| Beverly | 42,225 |
| Billerica | 41,159 |
| Blackstone | 9,217 |
| Blandford | 353 |
| Bliss Corner | 5,715 |
| Bolton | 5,802 |
| Boston | 646,622 |
| Bourne | 2,187 |
| Boxborough | 5,374 |
| Boxford | 2,503 |
| Boylston | 4,990 |
| Braintree Town | 38,295 |
| Brewster | 2,131 |
| Bridgewater Town | 28,920 |
| Brimfield | 3,690 |
| Brockton | 104,683 |
| Brookfield | 1,180 |
| Brookline | 62,854 |
| Buckland | 1,802 |
| Burlington | 26,039 |
| Buzzards Bay | 2,778 |