U.S. Census Bureau
The website for the U.S. Census includes reports and data for all populations
AgingStats.Gov
Website of the Federal Interagency Forum on Aging Related Statistics. The site includes a copy of the report: "Older Americans 2016: Indicators of Well-Being"
65+ in the United States: 2010
Population report developed by the U.S. Census Bureau in conjunction with the National Institute on Aging
Administration on Aging
The Administration on Aging's useful list of statistical reports, links and other resource information related to aging statistics
Disability Statistics Center
Website of the Cornell University's Disabilities Statistics Center which includes research tools and state-by-state disability reports