(Baby Boomers: Baby boomers were born between 1944 and 1964. They're current between 54-74 years old (76 million in U.S. baby boom [N] ยุคที่มีทารกคลอดมากกว่าปกติ (หลังสงครามโลกครั้งที่2) baby boomer [N] เด็กที่เกิดในยุค baby boom)
A common source of confusion when labeling generations is their age. Generational cohorts are defined (loosely) by birth year, not current age. The reason is simple: as people age, they change life stages. For example, a member of Generation X who turned 18 in 1998 would now be nearly 40. In that time, he or she cares about vastly different issues and is receptive to a new set of marketing messages. Regardless of your age, you will always belong to the generation you were born into.
As of 2018, the breakdown by age looks something like this:
Baby Boomers: Baby boomers were born between 1944 and 1964. They're current between 54-74 years old (76 million in U.S.) Gen X: Gen X was born between 1965 - 1979 and are currently between 39-53 years old (82 million people in U.S.) Gen Y: Gen Y, or Millennials, were born between 1980 and 1994. They are currently between 24-38 years old. Gen Y.1 = 24-28 years old (31 million people in U.S.) Gen Y.2 = 28-38 (42 million peeps) Gen Z: Gen Z is the newest generation to be named and were born between 1995 and 2015. They are currently between 3-23 years old (nearly 74 million in U.S.) The term Millennial has become the popular way to reference both segments of Gen Y (more on Y.1 and Y.2 below).
Realistically, the name Generation Z is a place-holder for the youngest people on the planet. It is likely to morph as they leave childhood and mature into their adolescent and adult identities.