Other notable interest groups included social clubs and fraternities, old boys' and alumni associations, and various voluntary associations. On the whole, the activities of interest groups and the roles they played in national politics depended on how narrow or broad the group's interests were, the resources available to it, its ties with those in authority, its affiliation with other groups, and the ideological character of its membership. The major interest groups were elitist, but other groups were also active at times.

Data as of June 1991