Generations are "groups of people born within the same 15 to 20-year span" said USA Today. Historians Neil Howe and William Strauss are generally credited with inventing the term "Millennials" in ...

The youngest members of the Greatest Generation, if using 1924 as the last year they were born, hit 100 years of age in 2024. Around 101,000 centenarians were living in the United States in 2024.