The number of books a standard library bookshelf can hold depends on its size and dimensions, along with the size of the books you place on them. For example, children’s books are often much thinner than textbooks or chapter books, so they take up less space. School Outfitters offers a wide variety of bookshelves of varying sizes, and our team of experts will help guide you in choosing which designs best fit your library’s needs in accommodating all your books.