The BML currently holds approximately 21,000 items in both the adult and children's collections. Featured in the main room are novels, including current "New York Times" bestsellers, current non-fiction, classics, and large print books, DVDs, and audio books and CDs. The reference room houses newspapers and magazines. The children's room has a good selection of popular and classic fiction, non-fiction, picture books and books on CD. The reference room features quiet study, reference and  public access computers. The Young Adult room offers current print and graphic novels, computers, and a comfortable seating area. The BML also has a genealogy/local history collection available for research.

Programs include storytimes for 2s, 3-5s and grades 1-3 and 4-7 on a regular basis. Summer Reading Clubs are held for grades 1-8.

The BML has an active Friends of the Library group, which sponsors such activities and fundraisers as the annual Booksale. They also provide hours of volunteer service to the library.

The BML also has a public access copier, public access computers with Internet access [including WiFi] and fax machine.

The library is a member of the Connecticut Library Consortium through in which it participates in cooperative buying, interlibrary loan, continuing education workshops and other activities. It is a Connecticard library permitting reciprocal borrowing statewide, book return delivery through Connecticar, and is a participant in iConn, the statewide database. The library also offers downloadable e-bboks book delivery to shut-ins through the generosity of the Friends of the Bill Memorial Library.