The Downtown building was dedicated in 1957, and additions were added in 1974 and then again in 1991.

The Ann Arbor District Library (AADL) system is composed of the Downtown Library, four branch libraries (Malletts Creek, Northeast, West, Pittsfield). The AADL provides free services to all residents living within the Ann Arbor School District's boundaries with services available to all others for a fee.

Mission:
The existence of the Ann Arbor District Library assures public ownership of print collections, digital resources, and gathering spaces for the citizens of the library district. We are committed to sustaining the value of public library services for the greater Ann Arbor community through the use of traditional and innovative technologies.

Vision
The Ann Arbor District Library provides collections, programs, and leadership to promote the development of literate and informed citizens through open and equal access to cultural, intellectual, recreational, and information resources.