Millennials, also known as Generation Y or Gen Y, are the demographic cohort following Generation X and preceding Generation Z. Researchers and popular media use the early 1980s as starting birth years and the mid-1990s to early 2000s as ending birth years, with the generation typically being defined as people born from 1981 to 1996. Most millennials are the children of baby boomers and early Gen Xers; Millennials are often the parents of Generation Alpha.
Across the globe, young people have postponed marriage. Millennials were born at a time of declining fertility rates around the world, and are having fewer children than their predecessors. Those in developing nations will continue to constitute the bulk of global population growth. In the developed world, young people of the 2010s were less inclined to have sexual intercourse compared to their predecessors when they were at the same age. In the West, they are less likely to be religious than their predecessors, but they may identify as spiritual.
Millennials have been described as the first global generation and the first generation that grew up in the Internet age.