Quick answer: Stray Kids has eight members. In calendar order their birthdays are: I.N (February 8), Hyunjin (March 20), Changbin (August 11), Han (September 14), Felix (September 15), Seungmin (September 22), Bang Chan (October 3) and Lee Know (October 25). Bang Chan is the oldest member and I.N is the maknae.
Stray Kids birthdays in calendar order
| Birthday | Member | Birth name | Year born | Zodiac sign |
|---|---|---|---|---|
| February 8 | I.N | Yang Jeong-in | 2001 | Aquarius |
| March 20 | Hyunjin | Hwang Hyun-jin | 2000 | Pisces |
| August 11 | Changbin | Seo Chang-bin | 1999 | Leo |
| September 14 | Han | Han Ji-sung | 2000 | Virgo |
| September 15 | Felix | Lee Yong-bok (Felix Lee) | 2000 | Virgo |
| September 22 | Seungmin | Kim Seung-min | 2000 | Virgo |
| October 3 | Bang Chan | Christopher Bang | 1997 | Libra |
| October 25 | Lee Know | Lee Min-ho | 1998 | Scorpio |
Stray Kids members by age, oldest to youngest
| Order | Member | Date of birth | Age in 2026 |
|---|---|---|---|
| 1 (oldest) | Bang Chan | October 3, 1997 | 28 → 29 on October 3 |
| 2 | Lee Know | October 25, 1998 | 27 → 28 on October 25 |
| 3 | Changbin | August 11, 1999 | 27 |
| 4 | Hyunjin | March 20, 2000 | 26 |
| 5 | Han | September 14, 2000 | 25 → 26 on September 14 |
| 6 | Felix | September 15, 2000 | 25 → 26 on September 15 |
| 7 | Seungmin | September 22, 2000 | 25 → 26 on September 22 |
| 8 (maknae) | I.N | February 8, 2001 | 25 |
Ages shown are international age, which has been Korea's official standard since June 2023.
Why September is Stray Kids' biggest birthday month
Three of the eight members — Han, Felix and Seungmin — were born within nine days of each other in September 2000. That makes the second half of September the single densest STAY celebration window of the year, and the point at which fan-funded birthday ads in Seoul and Tokyo compete hardest for the same inventory.
October is the second cluster: Bang Chan on October 3 and Lee Know on October 25 bracket the month. See the wider picture in our lists of K-pop idols born in September and K-pop idols born in October.
Each member's birthday in detail
Bang Chan — October 3, 1997
Christopher Bang is the leader, a producer in the 3RACHA unit, and the oldest member. He was raised in Sydney, Australia, which is why October 3 trends in both Korean and English on social media.
Lee Know — October 25, 1998
Lee Min-ho is a main dancer and vocalist, and was a backup dancer for BTS before joining Stray Kids.
Changbin — August 11, 1999
Seo Chang-bin is a main rapper and the third member of 3RACHA. His is the only Stray Kids birthday in August.
Hyunjin — March 20, 2000
Hwang Hyun-jin is a main dancer and rapper. March 20 is the only Stray Kids birthday in the first half of the year besides I.N's.
Han — September 14, 2000
Han Ji-sung is a rapper, vocalist and the last member of 3RACHA. His birthday falls one day before Felix's, and STAYs frequently book joint September 14–15 ad slots for the pair.
Felix — September 15, 2000
Lee Yong-bok, known as Felix, is a rapper and dancer, also from Sydney. His deep vocal tone and the back-to-back birthday with Han make this the most-booked date of Stray Kids' calendar.
Seungmin — September 22, 2000
Kim Seung-min is a main vocalist. September 22 is shared with TWICE's Nayeon, so the date is competitive for ad inventory in Shin-Okubo.
I.N — February 8, 2001
Yang Jeong-in is the maknae and a vocalist. February 8 opens Stray Kids' birthday year.
Celebrating a Stray Kids birthday with an ad in Japan
Stray Kids tour Japan regularly, and Tokyo has become one of the most popular cities outside Korea for fan-funded birthday ads — senil ads (생일광고) in Korean, 応援広告 (ouen koukoku) in Japanese. Fans living outside Japan can book these directly.
| Format | Who can book it | Apply by | Prices from |
|---|---|---|---|
| Digital signage / outdoor vision | An individual can book alone | 2 months before | About ¥13,000 |
| Station poster | A group of 2 or more, with a short group profile | 3–4 months before | About ¥16,000 |
Two things to settle before you book. Every fan support ad needs permission from the idol or their agency, and you will be asked for proof of it — a screenshot of the approval email or DM — when you order. Ads featuring anyone under 18 cannot be accepted. If permission and finished artwork are both already in hand, digital signage can sometimes go live in about 2 days.
Because Han, Felix and Seungmin fall in the same nine-day window, September slots in Shin-Okubo and Shibuya are the first to sell out. Check availability on the Oshi-Ad store, or read how to run a birthday ad for your K-pop idol in Japan first.
Frequently asked questions
How many members does Stray Kids have?
Eight: Bang Chan, Lee Know, Changbin, Hyunjin, Han, Felix, Seungmin and I.N. Woojin left the group in October 2019, and the remaining eight have been the fixed lineup since.
Who is the oldest member of Stray Kids?
Bang Chan, born October 3, 1997. He is also the leader.
Who is the maknae of Stray Kids?
I.N (Yang Jeong-in), born February 8, 2001.
Which Stray Kids members were born in the same year?
Four members were born in 2000: Hyunjin, Han, Felix and Seungmin. They are known collectively by fans as the 00-line.
Do Han and Felix share a birthday?
Not the same date, but consecutive ones — Han on September 14 and Felix on September 15, both in 2000. Joint celebrations across the two days are common.
When did Stray Kids debut?
March 25, 2018, under JYP Entertainment. Their debut anniversary is the second most common date fans book support ads for.
Member birth dates last verified September 2026.
.png&w=1920&q=75)
