Silver Book Fact
Older Americans as percentage of population
More than 1 in 8 (12.9%) of the US population is an older American.
Administration on Aging. A Profile of Older Americans: 2010. Washington, DC: US Department of Health and Human Services; 2011. https://www.acl.gov/sites/default/files/Aging%20and%20Disability%20in%20America/2010profile.pdf