The Twin Rivers Branch of the Mercer County Library System is a public library located in East Windsor, New Jersey. It offers a wide variety of reading materials, audiobooks, videos, and music CDs. Patrons can access the internet on public terminals, with some offering Microsoft Word and Excel. The library also provides access to an extensive magazine database. In addition to its collections, the branch hosts various programs for all ages, including story times, craft workshops, and educational sessions. It also participates in community initiatives, such as providing Naloxone kits.