[1] It represents about 2,000 members affiliated with public, academic, special, and school libraries throughout the state, and was founded in 1901.

Located in Mechanicsburg, Pennsylvania, PaLA represents the interests of the profession to the Legislature and others in state government.

It has programs providing opportunities for professional growth, leadership development, and continuing education for librarians.

PaLA is organized into eight regional chapters, the better to promote librarianship and library service on a focused geographical basis.

Committees and special interest groups include (but not limited to) College & Research Division; Buildings & Equipment; Digital Resources; Technical Services; Archives; Awards; Intellectual Freedom; Legislative Information; Membership; Nominations & Elections; Organization & Bylaws; Public Relations; and Scholarship.