City | 2024 Population |
|---|---|
| Lakeville | 12,153 |
| Lancaster | 8,566 |
| Lanesborough | 2,972 |
| Lawrence | 87,937 |
| Lee | 1,506 |
| Leicester | 10,961 |
| Lenox | 2,014 |
| Lenox Dale | 207 |
| Leominster | 43,584 |
| Leverett | 1,858 |
| Lexington | 34,193 |
| Leyden | 730 |
| Lincoln | 6,783 |
| Littleton | 10,247 |
| Littleton Common | 2,538 |
| Longmeadow | 15,842 |
| Lowell | 113,907 |
| Ludlow | 20,897 |
| Lunenburg | 2,705 |
| Lynn | 101,287 |
| Lynnfield | 12,882 |