NIH | NIH-commissioned Census Bureau report describes oldest Americans.

In 1980, there were 720,000 people aged 90 and older in the United States. In 2010, there were 1.9 million people aged 90 and older; by 2050, the ranks of people 90 and older may reach 9 million, according to a report from the U.S. Census Bureau, commissioned by the National Institute on Aging (NIA) at the National Institutes of Health.

The report describes this rapidly growing segment of the population which suggests that the designation of oldest-old should be changed from 85 to 90 years. The report, 90+ in the United States: 2006–2008, details the demographic, health and economic status of America’s oldest adults.