ACLA provides and promotes the highest quality public library service possible for all residents of Allegheny County through collaboration, cooperation, and coordination. We work with the 46 public library systems in Allegheny County to provide funding and assistance, including the public libraries located in the Jefferson area. These libraries include:

Baldwin Public Library
Bethel Park Public Library
Brentwood Public Library
Carnegie Library of Homestead
Carnegie Library of McKeesport
Clairton Public Library
Jefferson Hills Public Library
Pleasant Hills Public Library
South Park Public Library
Whitehall Public Library