Derry Public Library, serving an area of 34,000 residents in
Rockingham County, has a collection of 92,000 books and periodicals; in addition, there are 5,400 CDs, records, cassettes and other audio materials, as well as 3,600 video items, such as DVDs and VHS tapes. Internet terminals are available for use by the general public.
Staffing consists of 15 employees, of whom 5 are fully accredited librarians, plus volunteers. Annual expenditures on the library collection total $138,000. Patrons make 147,000 visits annually, and check out materials 220,000 times. Forty-two percent of all check-outs are children's materials.