This article was originally published on mentalfloss.com as These Revised Guidelines Redefine Birth Years for Millennials, Gen Z, Gen Alpha, and Gen Beta.

This is simple, but this chart ... Millennial or Gen-X? I was born in 1980, and am 33, so I thought I was at the tail-end of Gen-X, but according to Goldman I'm a Millennial. Besides the actual ...

Next → The millennials are an even larger ... your generation is by rolling over the chart below. 1. The most common age in America last year was 22. There were more 22 year olds, than any ...

A new generation is set to emerge in 2025, as Generation Alpha makes way for the arrival of Generation Beta. A blog post by social researcher and futurist Mark McCrindle — credited with defining the ...

Plus, as Dimock put it, "Millennials came of age during the internet explosion." The number of birth-years that a generation includes can vary. Millennials span a 16-year range, according to Pew.

Just look at the wave of coming millennial spending power in the chart below. The 40-year-old leads the way. While they were some of those hardest hit by the Great Recession, many have made wealth ...