Millennials were the largest generation group in the U.S. in 2023, with an estimated population of 72.7 million. Born between 1981 and 1996, Millennials recently surpassed Baby Boomers as the biggest group, and they will continue to be a major part of the population for many years. The rise of Generation Alpha Generation Alpha is the most recent to have been named, and many group members will not be able to remember a time before smartphones and social media. However, the group already makes up around 42.75 percent of the U.S. population, and they are said to be the most racially and ethnically diverse of all the generation groups, with the oldest Generation Alpha members aging into adolescents this year. Boomers vs. Millennials The number of Baby Boomers, whose generation was defined by the boom in births following the Second World War, has fallen by around seven million since 2010. However, they remain the second-largest generation group, and aging Boomers are contributing to steady increases in the median age of the population. Meanwhile, the Millennial generation continues to grow, and one reason for this is the increasing number of young immigrants arriving in the United States.

In 2023, Millennials were the largest generation group in the United States, making up about 21.71 percent of the population. However, Generation Z was not far behind, with Gen Z accounting for around 20.69 percent of the population in that year.

The statistic shows the number of people in the U.S. in 2011 and 2030, by generation. By 2030, the Millennial generation will have 78 million people whereas the Boomer generation will only have 56 million people in the United States.

There were approximately 14.69 million millennials in the United Kingdom in 2023. This generation, sometimes called Generation Y were born between 1981 and 1996 and are mainly the children of the post-war Baby Boomer generation. As of 2023, Millennials were the largest generational cohort in the UK, followed by Generation X at 14.04 million people, Baby Boomers at 13.57 million, and then by Generation Z at 13.2 million. The most numerous single-year of age for Millennials, and the UK as a whole, was 35 at 956,116. Boomerang generation The first cohort of millennials came of age at the turn of the century and have almost certainly been heavily influenced by the growth of internet accessibility during this time. The economic challenges faced by this generation may have a relation to the increasing share of young adults who live with their parents in the UK. This has led to the perhaps unfair, characterization of millennials as the boomerang generation, who failed to grow-up and mature. Some of these negative stereotypes regarding Millennials have since shifted to the next youngest generation, Generation Z, who have started to enter the workplace since the mid-2010s. Generation Remain One of the main challenges that British millennials currently face are their prospects after Brexit. Although the United Kingdom voted to leave the European Union in June 2016, there were clear divisions between regions, classes and age-groups. Most millennials voted to remain in the Brexit referendum with 73 percent of people aged 18 to 24, and 62 percent of those aged 25 to 34 voting to remain. In the next UK election, the majority of 25 to 49-year-olds intend to vote for the Labour Party, with only a slight majority of those over 65 planning to vote for the Conservative Party. Millennials also still appear to oppose Brexit, with approximately 65 percent of 25 to 49-year-olds believing Brexit to have been the wrong decision.

In 2023, there were about 72.7 million Millennials estimated to be living in the United States, making them the largest generation group in the country. In comparison, there were 69.31 million Gen Z and 65.35 million Gen X estimated to be in the United States in that year.

This statistic illustrates the number of Millennials within the French population in 2024, according to their age group and in millions. Out of approximately 68 million French people in 2024, almost eight million were between 25 and 34 years old. The group aged 20 to 24 had about four million less of representative people.

In 2022, 51 percent of Generation Z in the United States were White. In comparison, 48 percent of Gen Alpha were White in that year, making it the first generation that does not have a majority White population in the United States.

In 2023, there were approximately 14.69 million millennials in the United Kingdom, making it the largest generational cohort at that time. Millennials surpassed the Baby Boomer generation as the largest generation for the first time in 2019. The two youngest generations, Gen Z and Gen Alpha, numbered approximately 13.2 million, and 8.3 million respectively. Gen X are, as of the most recent year, the second-largest generation in the UK at 14.04 million people, with their parent's generation, the Silent Generation, numbering around 4.3 million people in the same year. There were estimated to be 85,920 people who belonged to the Greatest Generation, the parents of the Baby Boomer generation, who lived through major events such as the Great Depression and World War Two. Post-War Baby Boom The baby boomer generation was the largest generation for much of this period due to the spike in births that happened after the Second World War. In 1947 for example, there were over one million live births in the United Kingdom, compared with just 657,038 live births just thirty years later in 1977. Members of this generation are typically the parents of millennials, and were the driving force behind the countercultural movement of the 1960s, due to their large numbers relative to older generations at the time. The next generational cohort after Boomers are Generation X, born between 1965 and 1980. This generation had fewer members than the Boomer generation for most of its existence, and only became larger than it in 2021. Millennials and Gen Z As of 2022, the most common single year of age in the United Kingdom in 2020 was 34, with approximately 944,491 people this age. Furthermore, people aged between 30 and 34 were the most numerous age group in this year, at approximately 4.67 million people. As of 2022, people in this age group were Millennials, the large generation who came of age in the late 1990s and early 2000s. Many members of this generation entered the workforce following the 2008 financial crash, and suffered through high levels of unemployment during the early 2010s. The generation that followed Millennials, Generation Z, have also experienced tough socio-economic conditions recently, with key formative years dominated by the COVID-19 pandemic, climate change, and an increasingly unstable geopolitical situation.

The statistic shows the share of members of different etnicities or races within the Millennials in the U.S. The term Millennials refers to the age group 18 to 34 here. In 2011, 60 percent of the Millennials in the United States were non-Hispanic Whites.

In the Pakistan, the male population aged between 20 to 24 amounted to about 9.74 percent of the total male population in 2023. In contrast, the male population aged between 20 to 24 in Hong Kong amounted to about 4.5 percent of the total male population in 2021. The female Gen Z population in the Asia-Pacific region took up a smaller share among the female population overall compared to their male counterparts.

As of 2023, the estimated population of Gen Z in the United Kingdom was 13.2 million, ranging from eleven to 26-year's old. The most-common single year of age for Gen Z in this year was 26, at 887,804, while there were 788,039 that were aged 17, the least common year of age.

As of December 2023, Generation X was the most represented group among the generations in Germany, at almost 16.7 million people. The second-largest group, Generation Y, comprised around 16.45 million people.

In 2023, Millennials were the largest generational cohort in the United Kingdom, comprising approximately 21.5 percent of the population. Gen X was the next largest generation at 20.6 percent of the population, followed by Baby Boomers at 19.9 percent, and Gen Z on 19.4 percent.

According to China's most recent population census in 2020, Generation Z (defined as born between 1995 and 2009) accounted for about 16.5 percent of the Chinese population, while Generation Y (defined as born between 1980 and 1994) took up nearly 22.4 percent. The aging society is expected to become a major challenge for China in the coming decades.

Based on market research, the source divided U.S. Generation Z consumers (born between January 1, 1997 and December 31, 2007) into five segments based on their behavior and attitude. The largest segment, making up 35 percent of the total, were the so-called Stress Strivers, defined by the source as "high achievers, driven by a fear of not being good enough." Authentic Activists and Secluded Perfectionists followed, with 22 percent and 20 percent, respectively.

The statistic shows the share of Millennials in the Chinese population in 2014, by birth year. According to the estimates, Millennials born between 1980 and 1989 composed roughly 16 percent of China's total population in 2014.

As of 2021, Millennials and Baby Boomers made up an equal share of the Australian population at around 21.5 percent each, making them the largest generational groups at the time. Those aged 75 years and over made up the smallest portion of the population, followed by Gen Alpha, or those aged 0 to 9 years at the time.

This graph shows the distribution of the French millennial population by age group as of 2024. That year, women aged between 15 and 39 accounted for almost 31 percent of the French women population, while just over 28 percent of the male population in France was made up of people aged between 15 and 39.

This statistic shows the results of a survey detailing the share of millennials among the German population in 2021, broken down by the number of persons living in households. That year, 23.8 percent of millennials belonged to a one-person household, while 58.2 percent comprised a two-person household.

As of March 2023, there were around 148 million active internet users that were born between 2000 and 2009 in China. This smartphone generation spent about 8.9 percent more time on the online world than the average internet users.