Chapters are important components of ALA's structure. With one exception, chapters are organized and operate on a state, provincial or local basis to advance ALA's mission and goals. The exception is the Cyber Chapter, which operates in cyberspace and therefore has no geographical boundaries. ALA members from anywhere in the world may join and participate in the Cyber Chapter's electronic (online) meetings. ALA members may belong to one or more chapters — or none. When members belong to more than one chapter, they must designate a particular one as their primary affiliation. Prospective members requiring more specific information should call Member Services at ALA Headquarters, (847) 267-1252.

A number of chapters have developed their own Web sites in accordance with Guidelines established by ALA. Chapters with approved Web sites are underlined in the listing below and clicking on the chapter name will take you directly to that chapter's Web site. For a complete, alphabetical listing, see ALA Chapter Web Sites.