Carnegie Library of Pittsburgh is a member library of the Allegheny County Library Association (ACLA). The mission of ACLA–a system of 45 public libraries and Carnegie Library of Pittsburgh (70 locations)–is to promote the highest quality public library service for all residents of Allegheny County, PA. While each library is an independently-governed entity, membership in ACLA enables sharing of resources, such as a common online catalog system connecting all libraries electronically. ACLA headquarters staff offer professional development, build county-wide partnerships, solicit and receive funding, and provide technical assistance to build the governance and management capacity of individual libraries. ACLA expands the resources of local libraries beyond what they could accomplish individually.
ACLA and Carnegie Library of Pittsburgh continue to work together to create an overall vision of library service in the City of Pittsburgh and Allegheny County.