How many associations are there in Washington DC?

50 top associations

AARP topped a list of the 50 Largest Associations in Washington DC.  Believe it or not, these associations have an annual budget of $855.1 million.  This is definitely something.  Here are some of these top associations:  National Education Association, American Chemical Society, American Petroleum Institute, American Psychological Association, Association of American Medical Colleges, American Association for the Advancement of Science, American Society of Interior Designers, etc.