Millennials were the largest generation group in the United States in 2024, with an estimated population of ***** 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. As of 2024, the oldest Generation Alpha members were still only aging into adolescents. However, the group already makes up around ***** percent of the U.S. population, and they are said to be the most racially and ethnically diverse of all the generation groups. 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 ***** 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 2024, Millennials were the largest generation group in the United States, making up about 21.81 percent of the population. However, Generation Z was not far behind, with Gen Z accounting for around 20.81 percent of the population in that year.

This map layer shows the prevalent generations that make up the population of the United States using multiple scales. As of 2018, the most predominant generations in the U.S. are Baby Boomers (born 1946-1964), Millennials (born 1981-1998), and Generation Z (born 1999-2016). Currently, Millennials are the most predominant population in the U.S.A generation represents a group of people who are born around the same time and experience world events and trends during the same stage of life through similar mediums (for example, online, television, print, or radio). Because of this, people born in the same generation are expected to have been exposed to similar values and developmental experiences, which may cause them to exhibit similar traits or behaviors over their lifetimes. Generations provide scientists and government officials the opportunity to measure public attitudes on important issues by people’s current position in life and document those differences across demographic groups and geographic regions. Generational cohorts also give researchers the ability to understand how different developmental experiences, such as technological, political, economic, and social changes, influence people’s opinions and personalities. Studying people in generational groups is significant because an individual’s age is a conventional predictor for understanding cultural and political gaps within the U.S. population.Though there is no exact equation to determine generational cutoff points, it is understood that we designate generational spans based on a 15- to 20-year gap. The only generational period officially designated by the U.S. Census Bureau is based on the surge of births after World War II in 1946 and a significant decline in birth rates after 1964 (Baby Boomers). From that point, generational gaps have been determined by significant political, economic, and social changes that define one’s formative years (for example, Generation Z is considered to be marked by children who were directly affected by the al Qaeda attacks of September 11, 2001).In this map layer, we visualize six active generations in the U.S., each marked by significant changes in American history:The Greatest Generation (born 1901-1924): Tom Brokaw’s 1998 book, The Greatest Generation, coined the term ‘the Greatest Generation” to describe Americans who lived through the Great Depression and later fought in WWII. This generation had significant job and education opportunities as the war ended and the postwar economic booms impacted America.The Silent Generation (born 1925-1945): The title “Silent Generation” originated from a 1951 essay published in Time magazine that proposed the idea that people born during this period were more cautious than their parents. Conflict from the Cold War and the potential for nuclear war led to widespread levels of discomfort and uncertainty throughout the generation.Baby Boomers (born 1946-1964): Baby Boomers were named after a significant increase in births after World War II. During this 20-year span, life was dramatically different for those born at the beginning of the generation than those born at the tail end of the generation. The first 10 years of Baby Boomers (Baby Boomers I) grew up in an era defined by the civil rights movement and the Vietnam War, in which a lot of this generation either fought in or protested against the war. Baby Boomers I tended to have great economic opportunities and were optimistic about the future of America. In contrast, the last 10 years of Baby Boomers (Baby Boomers II) had fewer job opportunities and available housing than their Boomer I counterparts. The effects of the Vietnam War and the Watergate scandal led a lot of second-wave boomers to lose trust in the American government. Generation X (born 1965-1980): The label “Generation X” comes from Douglas Coupland’s 1991 book, Generation X: Tales for An Accelerated Culture. This generation was notoriously exposed to more hands-off parenting, out-of-home childcare, and higher rates of divorce than other generations. As a result, many Gen X parents today are concerned about avoiding broken homes with their own kids.Millennials (born 1981-1998): During the adolescence of Millennials, America underwent a technological revolution with the emergence of the internet. Because of this, Millennials are generally characterized by older generations to be technologically savvy.Generation Z (born 1999-2016): Generation Z or “Zoomers” represent a generation raised on the internet and social media. Gen Z makes up the most ethnically diverse and largest generation in American history. Like Millennials, Gen Z is recognized by older generations to be very familiar with and/or addicted to technology.Questions to ask when you look at this mapDo you notice any trends with the predominant generations located in big cities? Suburbs? Rural areas?Where do you see big clusters of the same generation living in the same area?Which areas do you see the most diversity in generations?Look on the map for where you, your parents, aunts, uncles, and grandparents live. Do they live in areas where their generation is the most predominant?

In 2024, there were approximately ** 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 **** million, and ****million respectively. Gen X are, as of the most recent year, the second-largest generation in the UK at ** million people. The population born before the end of the Second World War in mid-1945 was just over **** million in this year. 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 *** million live births in the United Kingdom, compared with just ******* 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 2024, the most common single year of age in the United Kingdom was 33, with approximately ******* people this age. Furthermore, people aged between 30 and 34 were the most numerous age group in this year, at almost *** million people. As of 2024, 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.

In 2024, Generation Z represented **** percent of the global population, making them the largest generation group in the world, according to the source. In 2030, Millennials were forecast to represent **** percent of the population worldwide.

In the Pakistan, the male population aged between 20 and 24 amounted to about **** percent of the total male population in 2023. In contrast, the male population aged between 20 and 24 in Hong Kong amounted to about *** percent of the total male population in 2023. 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 **** million Millennials estimated to be living in the United States, making them the largest generation group in the country. In comparison, there were ***** million Gen Z and ***** million Gen X estimated to be in the United States in that year.

There were over 15 million millennials in the United Kingdom in 2024. 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 2024, Millennials were the largest generational cohort in the UK, followed by Generation X at 14 million people, Gen Z at 13.6 million, and then the Baby Boomer generation at 13.4 million. The most numerous single-year of age for Millennials, and the UK as a whole, was 33 at over 976,000. 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 entered the workplace in 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. As of October 2025, around a quarter of 25 to 49-year-olds intended to vote for the Labour Party, the same who would vote for the insurgent Reform Party, currently riding high in opinion polls. Millennials still appear to oppose Brexit, with approximately 69 percent of 25 to 49-year-olds believing Brexit to have been the wrong decision.

Snapchat has a reach into 75% of the millenial and Gen Z audience.

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.

By 2028, it is estimated that Gen Z and millennial voters will comprise the majority of eligible voters in the United States. In the upcoming 2024 presidential election, Gen Z and millennial voters will make up around **** percent of eligible voters in the country.

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 ******. Columbia, SC, and Boston, MA, were the two other cities where this figure where the net migration exceeded 10,000.

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.

In 2024, Millennials were the largest generational cohort in the United Kingdom, comprising approximately 21.7 percent of the population. Gen X was the next largest generation at 20.3 percent of the population, followed by Gen Z at 19.6 percent, and the Baby Boomer Generation on 19.3 percent. People belonging to earlier generations accounted for just 5.9 percent of the UK's population in this year.

As of August 2024, more than half of Gen Z women and ** percent of Gen Z men surveyed worldwide believed that mental health was the biggest health problem in their country. The gender gap was quite pronounced across all generations, but was the largest among the Gen Z population.

As of August 2024, ** percent of Gen Z women and a quarter of Gen Z men surveyed worldwide believed that stress was the biggest health problem in their country. Furthermore, the gender gap differed across all generations, but was the greatest among the Gen Z population.

As of October 2025, 6.04 billion individuals worldwide were internet users, which amounted to 73.2 percent of the global population. Of this total, 5.66 billion, or 68.7 percent of the world's population, were social media users. Global internet usage Connecting billions of people worldwide, the internet is a core pillar of the modern information society. Northern Europe ranked first among worldwide regions by the share of the population using the internet in 2025. In the Netherlands, Norway, and Saudi Arabia, 99 percent of the population used the internet as of February 2025. North Korea was at the opposite end of the spectrum, with virtually no internet usage penetration among the general population, ranking last worldwide. Eastern Asia was home to the largest number of online users worldwide—over 1.34 billion at the latest count. Southern Asia ranked second, with around 1.2 billion internet users. China, India, and the United States rank ahead of other countries worldwide by the number of internet users. Worldwide internet user demographics As of 2024, the share of female internet users worldwide was 65 percent, five percent less than that of men. Gender disparity in internet usage was bigger in African countries, with around a 10-percent difference. Worldwide regions, like the Commonwealth of Independent States and Europe, showed a smaller usage gap between these two genders. As of 2024, global internet usage was higher among individuals between 15 and 24 years old across all regions, with young people in Europe representing the most considerable usage penetration, 98 percent. In comparison, the worldwide average for the age group of 15 to 24 years was 79 percent. The income level of the countries was also an essential factor for internet access, as 93 percent of the population of the countries with high income reportedly used the internet, as opposed to only 27 percent of the low-income markets.

As of July 2025, around *****percent of global active Instagram users were men between the ages of 25 and 34 years. More than half of the global Instagram population worldwide was aged 34 years or younger. Teens and social media As one of the biggest social networks worldwide, Instagram is especially popular with teenagers. As of fall 2023, the photo-sharing app ranked third in terms of preferred social network among teenagers in the United States, following TikTok and Snapchat. Instagram was one of the most influential advertising channels among female Gen Z users when making purchasing decisions. Teens reported feeling more confident, popular, and better about themselves when using social media and less lonely, depressed, and anxious. However, social media can also have negative effects on teens, which can be much more pronounced on those with low emotional well-being. It was found that ** percent of teenagers with low social-emotional well-being reported having experienced cyberbullying when using social media, while in comparison only **** percent of teenagers with high social-emotional well-being stated the same. As such, social media can have a big impact on already fragile states of mind.

In 2021, the five most popular cities in Florida, U.S. for Gen Z renters had a large range of applications from this generation from ** percent in Tallahassee to ** percent in St. Petersburg.

Overall, the cities with the highest share of Gen Z apartment applicants in the United States were Boulder, CO, Davis, CA, and Conway, AR, all exceeding ** percent of apartment seekers. This can be explained with different factors such as the median age of the population, apartment availability, and the monthly rental cost.

In 2023, full-time workers in their 40s had the highest average annual salary in the United Kingdom, earning on average around 39,491 British pounds a year, compared with 20,437 for people aged between 18 and 21.