To provide the citizens of Allegheny County with the premier library system in the Commonwealth.


ACLA, a federated library system, pursues, provides and promotes the highest quality public library service possible for all residents of Allegheny County through collaboration, cooperation and coordination.

We have 45 member libraries with 73 locations, including the Carnegie Library of Pittsburgh and its 18 branches.

Core Values

  • Provides visionary leadership committed to excellence and innovation.
  • Promotes ethical stewardship of resources.
  • Supports member libraries through a free and open exchange of information and active collaboration.
  • Respects diversity of member library opinions and community needs.
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