If someone asks, “Which generation do you belong to?”—some may answer easily. However, in 2025, generational age groups often overlap, and their definitions are frequently updated. Today, Sixtygram will take you through a deep dive into the latest generation classifications, their characteristics, and key figures from each group to help you understand them better.
What Is Generational Classification?
The concept of generational classification began in the 20th century, introduced by Hungarian sociologist Karl Mannheim. He defined the “Theory of Generations” as groups of people who experience the same major events in their lifetime but come from diverse backgrounds, such as geography, class, or culture. Each generation is shaped by significant social contexts and key events, including world wars, technological revolutions, and groundbreaking innovations that transform society.
Currently, generations can be categorized by age groups linked to significant events during their birth years, as follows.
|
Generations |
Years |
Current Age (In 2025) |
|---|---|---|
|
2025- 2039 |
≤1 | |
|
2510 – 2025 |
1 – 15 | |
|
1997 – 2012 |
13 – 28 | |
|
1981 – 1996 |
29 – 44 | |
|
1965 – 1980 |
45 – 60 | |
|
1947 – 1966 |
59 – 78 | |
|
1928 – 1945 |
80 – 97 | |
|
1901 – 1927 |
98 – 124 | |
|
1883 – 1900 |
125 – 142 |
Generation Details
1. Gen Beta
Gen Beta refers to newborns up to one year old, born between 2025 and 2039.
Age: ≤1 year (New born In 2025)
Birth years: 2025 – 2039
Gen Beta are generation enters a world of rapidly advancing technology, growing up alongside AI and the Internet of Things as integral parts of daily life. They will face environmental challenges and rapid global social changes, becoming the first to experience cutting-edge innovations from birth.
2. Gen Alpha
Gen Alpha includes individuals aged 1 to 15 years, born between 2010 and 2025.
Age: 1 – 15 years
Birth years: 2010 – 2025
Gen Alpha has grown up alongside digital technology and social media, becoming familiar with electronic devices from an early age. Raised with modern parenting that nurtures creativity and individuality, they are highly adaptable and tend to prioritize experiential learning over traditional education.
Notable figures in Gen Alpha such as:
- Jin and Rainy : Daughters of P’Weng and P’Tuk (Little Monster).
- Cyanblue : Son of singer Gavin Duval and his wife, PumPui Pantipa.
3. Gen Z
Gen Z includes individuals aged 13 to 28 years, born between 1997 and 2012.
Age: 13 – 28 years
Birth years: 1997 – 2012
Gen Z has grew up with the internet and smartphones, becoming the first to integrate social media into daily life. They embrace cultural diversity, prioritize sustainability and social justice, and are outspoken advocates for change, striving for a better society.
Notable Figures in Gen Z such as:
- Lisa : Thai singer, dancer, and actress.
- MrBeast : Famous YouTuber.
- BamBam (Kunpimook Bhuwakul) : Thai rapper and singer based in South Korea.
- Billie Eilish : American singer of Irish descent.
4. Gen Y (Millennials)
Gen Y includes individuals aged 29 to 44 years, born between 1980 and 1996.
Age 29 – 44 years
Birth years: 1980 – 1996
Gen Y has grew up during the transition from analog to digital, making them highly adaptable. They are often creative, seek new experiences, and prioritize quality of life over material wealth. As key drivers of the digital economy and startup culture, they play a crucial role in today’s innovation and business landscape.
Notable Figures in Gen Y such as:
- Ariana Grande : American singer and actress.
- Yaya (Urassaya Sperbund) : Thai actress and model.
- Ung Ing (Paetongtarn Shinawatra) : 31st Prime Minister of Thailand.
- Cristiano Ronaldo : Renowned Portuguese footballer.
- Justin Bieber : Canadian singer and songwriter.
5. Gen X
Gen X includes individuals aged 45 to 60 years, born between 1965 and 1980.
Age: 45 – 60 years
Birth years: 1965 – 1980
Gen X has grew up during major social and political shifts, witnessing both the Cold War and the computer revolution. Highly independent and freedom-loving, they excel at balancing work and family life. As a bridge between traditional values and modern technology, they adapt seamlessly to change.
Notable Figures in Gen X such as:
- Eminem : American rapper, producer, songwriter, and actor.
- Elon Musk : CEO and chief engineer of SpaceX.
- Robert Downey Jr : Lead actor in Iron Man.
- Tik (Jesdaporn Pholdee) : Thai actor.
- Kong Saharat : Singer, member of Nuvo, and The Voice Thailand coach.
6. Gen Baby Boomer
Baby Boomer are individuals aged 59 to 78 years, born between 1947 and 1966.
Age: 59 – 78 years
Birth years: 1947 – 1966
Baby Boomer was born after World War II, during a period of rapid economic growth. Known for their resilience, strong work ethic, and focus on stability, they value loyalty to both family and organizations. They prioritize education for their children, striving to provide better opportunities, and played a key role in driving economic prosperity in the latter half of the 20th century.
Notable Figures in Baby Boomer such as:
- Steve Jobs : American ent0repreneur and inventor, co-founder of Apple.
- Bird (Thongchai McIntyre) : National artist in contemporary Thai music.
- Donald Trump : American businessman and 45th President of the United States.
- Add Carabao : Thai folk-rock singer and leader of Carabao band.
- Michael Jackson : The King of Pop and legendary American singer.
- Tom Hanks : Academy Award-winning American actor.
7. Gen S (Silent Generation)
Silent Generation includes individuals aged 80 to 97 years, born between 1928 and 1945.
Age: 80 – 97 years
Birth years: 1928 – 1945
Silent Generation lived through the Great Depression and World War II, shaping them into resilient, hardworking, and modest individuals. They prioritize financial stability and family security, valuing thrift and perseverance due to the hardships they experienced.
Notable Figures in Silent Generation such as:
- Mitr Chaibancha : Thailand’s legendary and beloved actor.
- John Lennon : Lead singer and guitarist of The Beatles.
- Daeng Biley : Notorious Bangkok gangster of his era.
- Elvis Presley : The King of Rock and Roll.
- Joe Biden : 46th President of the United States.
- Neil A. Armstrong : American astronaut and the first to set foot on the moon.
8. Gen G (Greatest Generation)
Greatest Generation includes individuals aged 98 to 124 years, born between 1901 and 1927.
Age: 98 – 124 years
Birth years: 1901 – 1927
Greatest Generation or G.I. Generation lived through World War I and the Great Depression, shaping them into selfless, resilient, and determined individuals. They played a crucial role in laying the foundations of the modern world, driving progress in economics, politics, and society for future generations.
Notable Figures in Greatest Generation such as:
- Arjin Panjaphan : Thai writer, best known for The Tin Mine short story series.
- John F. Kennedy : 35th President of the United States.
- Si Quey (Lee Ui Sae-Ung) : Infamous figure in Thailand, accused of serial killings and cannibalism.
- Queen Elizabeth II – A significant monarch of the British royal family.
- Frank Sinatra : American singer, famous for classics like Fly Me to the Moon.
9. Gen L (Lost Generation)
Lost Generation includes individuals aged 125 to 142 years, born between 1883 and 1900.
Age: 125 – 142 years
Birth years: 1883 – 1900
Lost Generation lived through World War I and significant social upheavals, shaping a worldview often marked by cynicism and disillusionment. Despite this, they pioneered major transformations in the modern world. Today, all members of this generation have passed away, earning them the name “Lost Generation.”
Notable Figures in Lost Generation such as:
- Phraya Phahon Phonphayuhasena : Thailand’s 2nd Prime Minister and a key figure in the 1932 Siamese Revolution.
- Adolf Hitler : Leader of the Nazi Party.
- Mao Zedong (Chairman Mao) : Chinese revolutionary and founding father of the People’s Republic of China.
- Al Capone: Infamous American crime boss.
- Ho Chi Minh : Revolutionary leader, Prime Minister, and President of the Democratic Republic of Vietnam.
