Generations: The Real Differences Between Gen Z, Millennials, Gen X, Boomers, and Silents—and What They Mean for America's Future

by Jean M. Twenge

At the other end, the later Gen X birth years bleed into early Millennials, inspiring a label (“Xennials”) and a persistent debate about the last year of the generation: Anywhere from 1977 to 1983 has been suggested.