The US Census Arts, Recreation, & Travel: Recreation & Leisure Activities:
Here you can find different kinds of information about participation in sports and other leisure activities within the United States.
Statistics in Sports: A Section of the American Statistical Association
Equity in Athletics Data Analysis Cutting Tool:
US. Department of Education site with data from the Office of Postsecondary Education Equity in Atheletics Disclosure Website.
Market Research:
The University of Illinois has an excellent research guide with links for free market research.
