The Long Island Rail Road's Port Jefferson Branch is the system's busiest, carrying 13.9 million customers in 2024 — up from 11.9 million the year prior. That growth is part of a broader surge: total LIRR ridership hit 75.5 million in 2024, a 15.8% jump over 2023 and the strongest year in the railroad's history. Syosset Station is a key stop along this high-performing branch. While the MTA doesn't publish station-level figures, Syosset is estimated to handle approximately 6,000 weekday travelers translating to roughly 1.5 to 1.8 million annual boardings. That's a substantial, predictable flow of affluent commuters moving through the trade area every single day.