Fairfield County, Ohio hosts a variety of public and private libraries. The Fairfield County District Library's main branch is located in Lancaster, Ohio, but there are branches in Amanda, Baltimore, Bremen, and Carroll. Pickerington and Lithopolis have their own public libararies.
There are also two private libraries. One is associated with Ohio University on the OUL Branch Campus in Lancaster. The other is a genealogy library run by the Fairfield County Chapter of the Ohio Genealogy Society. This library is also located in Lancaster, Ohio.