The library system has more than 2.4 million items of print and media materials, as well as extensive online journals and research databases.

OCL is a member of the OhioLINK consortium which provides rapid access to an additional 50 million volumes from colleges and universities across Ohio.

On October 6, 2018, the Main Library located in the Mudd Center, was renamed for Oberlin graduate Mary Church Terrell (class of 1884, 1888, and Hon.

The former central library, which was funded by Andrew Carnegie, opened in 1908 and served both the college and the town of Oberlin for almost seven decades.

The Academic Commons features an electronic classroom, Azariah's Café, computer workstations, six group study rooms, circulation and reference services, and the Writing Center.