The library system's administrative offices are in Xenia, and other branches are located in Beavercreek, Cedarville, Fairborn, Jamestown, Bellbrook, and Yellow Springs.
Other features of the library system include child care centers, story time, special programs for children and teens, and serving homebound patrons.
The Greene County Public Library receives approximately 75% of its income from the State of Ohio.
They operated a small library in a room donated by Eli Millen, located on Greene Street in Xenia.
The Greene County Room, housing local history and genealogy material, was established in 1971.