The Lamar County Library System is composed of four branches located in Purvis, Sumrall, Lumberton and Oak Grove. On July 17, 1997, the Lamar County Board of Supervisors passed a resolution to establish the Lamar County Library System.
Lamar County Library System is governed by a five-member Board of Trustees, each of whom is appointed by a member of the Board of Supervisors to represent their district in Lamar County. The Board of Trustees makes policy for the Lamar County Library branches; is responsible for major budget decisions; and makes decisions concerning personnel.
Direct funding is provided through a variety of sources: the Lamar County Board of Supervisors from the general fund; state and federal grants through the Mississippi Library Commission; bank interest; donations; revenues generated by charges for faxing and copying for the public; overdue fines; and through other grants obtained by the library system. Indirect support is provided by the Friends of the Library groups, the City of Purvis, and the City of Lumberton.