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.

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.

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.

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.

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 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.

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.

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.

Washington, D.C. had the highest net migration for 18- to 24-year-olds in 2021, making it the most attractive city among the generation Z population. The number of Zoomers who moved in less the number of Zoomers who moved out of Washington stood at 12,912. Columbia, SC, and Boston, MA, were the two other cities where this figure where the net migration exceeded 10,000.

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.

As of June 2022, there were around 342 million monthly active internet users among Generation Z in China. This smartphone generation dives deep into the mobile ecosystem and enjoys various digital services, particularly social media, online shopping, and video streaming.

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.

A 2023 survey found that around 60 percent of Generation Z in Indonesia were mainly concerned about social and economic inequality. Other leading concerns included mental health and human rights, as stated by 51 percent and 42 percent of respondents, respectively.

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.

According to a survey conducted in 2024, 65 percent of Generation Z children and adolescents said that they worried about what the world will be like when they are adults in the United States. Gen Z respondents aged 16 to 18 years old were most likely to share this belief, at 76 percent, followed by multiracial members of Gen Z youth and female Gen Z youth.

When compared to the votes of the Spanish population as a whole, Generation Z (those born between mid to late 1990s and the early 2010s) tends to sympathize with new parties more than the traditional ones: for example, PSOE and PP. In the 14th Cortes Generales, the legislature determined by the results of the national elections, which took place in November 2019, the vote of zoomers for the left-wing alliance, Unidas Podemos, was 44.7 percent points higher than UP's results among the total population. While Vox, the extreme-right party, was not particularly popular in its two first general elections, in November 2019 it had a slightly larger share of votes from Gen Z compared to the whole of the population.

As of September 2023, YouTube as the most popular social media platform for global users, with 97 percent of respondents reporting to use the popular video platform. YouTube was also the most popular social media among Gen Z users, with 96 percent of respondents in this age group reporting to have used the video platform as of the examined period. Facebook's usage kept steady among among the general digital population, with around eight in 10 reporting to have used the platform. In comparison, the social media's popularity was in free fall among gen Z users with only four in 10 among those surveyed reporting to engage with the Meta-powered platform.