The proportion of adults ages 70 and older with dementia declined from 13% in 2011 to 10% in 2019.
The share of older people with dementia is decreasing 1% to 2.5% per year, depending on the time frame and age group examined.
But as the large baby boomer population ages, the total number of people with dementia will rise. Estimates vary, but experts report more than 7 million people ages 65 or older had dementia in 2020. If current demographic and health trends continue, more than 9 million Americans could have dementia by 2030 and nearly 12 million by 2040.
Read the full article with references: Fact Sheet: U.S. Dementia Trends from the Population Reference Bureau (PRB), October 2021.