Question: are 25 year olds millennials?
Answer: According to this definition, as of 2020 the oldest millennial is 39 years old, and the youngest will turn 24 this year. ... Nielsen Media Research has defined millennials as adults between the ages of 22 and 38 years old in 2019. CNN reports that studies often use 1981–1996 to define millennials, but sometimes 1980–2000.