Here are the bus routes with more than 10,000 weekly boardings which grew the most in terms of passengers between 2023 and 2024:
| Route | % Change since 2023 | % Change since 2019 |
| 426 (Lynn-Haymarket/Wonderland via Cliftondale) | 21.1% | -4.9% |
| 435 (Lynn-Salem via Peabody) | 19.9% | 50.3% |
| 429 (Lynn-Northgate via Square One Mall) | 17.3% | 5.4% |
| 450 (Salem-Haymarket/Wonderland) | 16.3% | 24.6% |
| 33 (River St @ Milton St-Mattapan) | 15.5% | -5.2% |
| 430 (Saugus-Malden Ctr) | 13.6% | -10% |
| 350 (North Burlington-Alewife) | 12.7% | -23.5% |
| 40 (Georgetown-Forest Hills) | 12% | -10.8% |
| 57 (Watertown Yard-Kenmore) | 11.1% | -19.1% |
| 240 (Avon Sq-Ashmont) | 11% | -17.3% |
| 120 (Orient Heights-Maverick) | 11% | -7.5% |
| 455 (Salem-Wonderland) | 10.9% | 12.4% |
| 116 (Maverick-Wonderland) (Pre-BNRD) | 10.9% | 7.4% |
| SL3 (South Station-Chelsea) | 10.5% | 32.7% |
| 238 (Holbrook/Randolph-Quincy Center) | 9.9% | -17.9% |
Lots of growth from the suburban routes. Is this from a general return to the office, a move away from the CR due to unreliability, or some of both? North shore ridership in general seems to be growing rapidly, so in conclusion extend the blue line, the end.
...and here are the ones that shrank the most.
| Route | % Change since 2023 | % Change since 2019 | Suspected reason for contraction/Comments |
| 17 (Fields Corner-Andrew) | -15.2% | -28.5% | Increasing RL reliability |
| 216 (Houghs Neck-Quincy Ctr) | -14.6% | 12.4% | ??? |
| 83 (Rindge Ave-Central) | -13.1% | -35.4% | ??? |
| CT2 (Ruggles-Sullivan) | -10.3% | -11% | Same pattern as 47, suggests demand along the route has changed? Possibly more reliable subway lines have made changing downtown more attractive? |
| 29 (Jackson Sq - Mattapan) | -10.1% | -43.2% | This one is especially baffling given that the Columbus Ave bus lanes should have made this route faster |
| 47 (Broadway-Central) | -8.6% | -20% | Same pattern as CT2, suggests demand along the route has changed? |
| 96 (Medford Sq - Harvard) | -7.6% | -51.5% | GLX? |
| 11 (City Point - Downtown) | -7.2% | -46.2% | ??? |
| 34 (Dedham Sq - Forest Hills) | -6.9% | -29.2% | 34E ridership is up YOY however |
| 8 (Kenmore-Harbor Point) | -6.6% | -4.8% | More crosstown contraction |
| 91 (Sullivan-Central) | -6.6% | -41.2% | ??? |
| 501 (Brighton Express) | -5.3% | -34.5% | ??? |
| 41 (JP-JFK) | -5.8% | -25.7% | ??? |
| 19 (Fields Corner-Kenmore) | -3.6% | -16.7% | Maybe LMA demand is down? |
| 28 (Ruggles-Mattapan) | -2.4% | 3.3% | More people choosing the Fairmount line? |