The Public Relations Society of America, based in New York City, is the world's largest organization for public relations professionals. The Society has more than 28,000 professional and student members. PRSA is organized into 112 Chapters nationwide, 19 Professional Interest Sections, along with Affinity Groups, which represent business and industry, counseling firms, independent practitioners, military, government, associations, hospitals, schools, professional services firms and nonprofit organizations. The Public Relations Student Society of America (PRSSA) has 255 Chapters at colleges and universities throughout the United States.