The Cavalier County Library is located in Langdon, the county seat. The library serves a population of about 4700 residents. Not only do we serve county residents, residents from surrounding areas are invited to use our services for a small yearly fee. Adult/children's books, large-print books, books on CD or tape, magazines, videos/DVDs, and newspapers (Cavalier County Republican, Grand Forks Herald, Devils Lake Journal, Cavalier Chronicle)are all a part of our collection! Please stop by the library and see what we have to offer you!