A Jefferson County Library card unlocks a whole world of resources. Our collection of 1.6 million items is at your fingertips, including many items you might not expect! In addition to books, movies, audiobooks, and magazines, our Library of Things gives you access to things like cake pans, fishing poles, telescopes, and craft supplies. Our online databases offer invaluable information for business owners, farmers, teachers, and more. And our staff stand ready to help you find the information you need. There’s so much to discover here, and we can’t wait to help you get started! Our Mission "Jefferson County Library: your place to learn, connect, grow, and achieve." Our Vision Jefferson County Library will empower the community toward a lifetime of discovery, learning, and growth as a hub of tradition and innovation, cultural preservation and promotion, and equitable access. Jefferson County Library serves residents of Jefferson County, Missouri, through four locations: Northwest, Arnold, Windsor, and Cedar Hill.