Dementia is more prevalent at older ages. About 3% of adults ages 70 to 74 had dementia in 2019, compared with 22% of adults ages 85 to 89 and 33% of adults ages 90 and older.
Women are slightly more likely to have dementia than men. Among adults ages 70 and older, 11% of women and 8% of men had dementia in 2019.
Non-Hispanic white adults are less likely to develop dementia than most other racial and ethnic groups. Among those ages 70 and older, an estimated 8.5% of non-Hispanic white adults were living with dementia in 2019, compared with 16.1% of non-Hispanic Black adults and 16.4% of Hispanic adults.
As they age, married older people may have a lower risk of dementia than their unmarried counterparts.
Read the full article with references: Fact Sheet: U.S. Dementia Trends from the Population Reference Bureau (PRB), October 2021.