The Cumberland County Library System Board's seven members are nominated by local library boards and appointed by the Cumberland County Commissioners.
Board members serve for a three year term.
Officers are elected annually. Each member has a designated alternate who may substitute and vote in the member's absence. Cumberland County Commissioner Nancy Besch serves as the Board's liaison to Cumberland County. Stephen D Tiley, Assistant Solicitor for Cumberland County, is the board's solicitor. The Cumberland County Library System's administrative office is located at 19 South West Street.