The Library System is governed by a five-member volunteer Board of Trustees, the members of which are appointed by the Clallam County Commissioners.

[1] The System consists of a Main Library and Administrative Center in Port Angeles, branches in Clallam Bay, Forks, and Sequim, an Outreach program providing books and other materials to people who are homebound, and a variety of web-based services.

NOLS offers a collection of more than 260,000 items, including books, DVDs, ebooks, audiobooks, CDs, and extensive online resources.

Unable to afford a bookmobile, the library initiated mobile service using private cars and an old Red Cross disaster unit.

In 1964, the Library Board purchased land at the intersection of Peabody Street and Lauridsen Boulevard and started construction of a new service center facility following a successful bond issue election in November of that year.