Oceanside Little League serves the midcoast Maine communities of Cushing, Owls Head, Rockland, St. George, South Thomaston, Thomaston, and Vinalhaven.

The organization provides opportunities for Major League Baseball and Softball in all communities, and Minor League Baseball and Softball in all mainland communities. The organization also conducts the Tee Ball program for residents of Rockland, Owls Head, and South Thomaston.