In Central Suffolk, the East Patchogue-based Louis A. Fuoco Bus Line (1962-1996) served Patchogue, East Patchogue, Hagerman, Bellport, South Haven, Mastic, Mastic Beach, Port Jefferson, Medford, Coram, Ridge, Calverton, and Riverhead.
On the east end, Sunrise Coach Lines (1946-Present), which served Greenport, Riverhead, Southampton, Sag Harbor, and Easthampton, began operations in 1946, continued in existence under contract with joint venture Twin Forks Transit for the routes they originally operated for Suffolk County Transit.