Hollowbrook Branch Library serves 90,500 residents in the City of Trenton. Established in 1975, the library belongs to the Mercer County Library System. The library system maintains 676,350 volumes and circulates 1.9 million items per year. Hollowbrook Branch Library offers books, e-books, e-magazines, digital movies, digital resources, magazines, newspapers, CDs, DVDs, video games, interlibrary loan services, wireless internet access, public computers, printing, copying, and faxing services.