The Central Library, with 60,000 square feet of public space was designed by A.J. Diamond, Donald Schmitt and Company and opened in 1993. The building subsequently won the Governor General's Award for Architecture (1994), the Portland Cement Association Concrete Building Award (1994), and the Financial Post Design Effectiveness Award for Architectural Design (1995).

Library service is delivered in two double volume spaces with both traditional library spaces and state of the art library technology. Ample natural light, comfortable reading and study spaces, and a coffee shop contribute to an enjoyable visit. Programs for children, young adults, and adults are run throughout the year.

The Central Library houses up to 170,000 volumes. As an information and educational resource, it provides in-depth collections in all formats such as print and e-books; print and online magazines and newspapers; plus print, microfilm, and digitized local history information. In addition it provides fast-moving popular materials such as DVDs, videos, audio CDs, paperbacks, and bestselling fiction.

The first floor has the Children's Department and the Browsery. Meeting rooms are located on the second floor. Adult materials are kept on the third floor with reference sources, magazines, newspapers, as well as fiction and non-fiction materials. Library administration and the Local History Room are found on the fourth floor.

Central Library attracts more than 12,000 in-person users per week and circulation from this site is one million items per year.

Other locations: Oak Ridges Moraine Library, Richmond Green Library, and Richvale Library.