Nicknames and birthdate ranges for the major demographic cohorts of the United States, with links to the excellent Wikipedia entries for each. See Wikipedia's excellent Generation timeline.
• Lost Generation Born 1883-1900, came of age during World War I. Gertrude Stein coined "You are all a lost generation" and Ernest Hemingway popularized it in ~coined by Gertrude Stein and popularized as the epigraph for his novel The Sun Also Rises.
• Greatest Generation Born 1901-27. Also known as the G.I. Generation and the World War II generation.
• Silent Generation Born 1928-45. The "Lucky Few" Small because of the Depression and World War II
• Baby Boomers Born 1946-64. The Me Generation.
• Generation Jones Born 1955-1965 "Keeping up with the Joneses"
• Generation X or "Gen X" Born 1965-1980. The "baby bust" because of smaller numbers; sometimes called the "latchkey generation."
• Xennials Born 1977 -1983. A "micro-generation" or "crossover generation," with an analog childhood and digital adulthood.
• Millennials Born 1981-1996. Gen Y and the "echo boomers" as children of boomers; sometimes called "digital natives" as growing up familiar with the Internet, mobile devices, and social media,
• Generation Z or Gen Z or iGen Born 1997-2012. Sometimes called "Zoomers." "The second generation after Generation X, continuing the alphabetical sequence from Generation Y (Millennials)."
• Generation Alpha or Gen Alpha Born in early 2010s-mid-2020s. First to be born entirely in 21st century and to live through the Covid-19 pandemic.