The Circulation Department is responsible for the lending of materials from the general collection to the Saint Augustine's University community and eligible members of the public. The department maintains the patron database.

It is also the department where one may ask if the library has a particular book or periodical, check on its availability, place a hold and reserve if is is already in circulation or initiate a search if a requested item cannot be immediately located. The Circulation Department is also responsible for the replacement for lost or missing titles and fines are generated by Circulation if necessary.

The Circulation Department is responsible for checking in and reshelving returned items, the maintenance of the general collection in the stack areas, reserved books, and building security in general, any maintenance or security problems should be reported to the main desk and any maintenance or security problems should be reported to the main desk.

Reserve

The Reserve Collection is located behind the Desk. It shelves and circulated required and suggested materials reserved by the faculty to support the curriculum. It is used almost exclusively by Saint Augustine's University students, and a student ID is necessary for checkout. Because of high demand for reserved materials, the circulation periods are very short, and must be used for all the hours that the library is open.