Member ages
ZEROBASEONE Member Ages and Birthdays
ZEROBASEONE member ages and birthdays ranked oldest to youngest, from Kim Jiwoong at age 27 to Han Yujin at age 19.
Average22.9years old
Oldest to youngest
| Rank | Member | Age | Birthday | Position |
|---|---|---|---|---|
| #1 | Kim JiwoongMember | 27 | Dec 14, 1998 | Visual |
| #2 |  Zhang HaoMember | 25 | Jul 25, 2000 | Main Vocalist, Visual, Center |
| #3 |  Sung HanbinMember | 25 | Jun 13, 2001 | Leader, Visual, Main Dancer |
| #4 |  Seok MatthewMember | 24 | May 28, 2002 | Member |
| #5 |  Kim TaeraeMember | 23 | Jul 14, 2002 | Main Vocalist |
| #6 |  RickyMember | 22 | May 20, 2004 | Member |
| #7 |  Kim GyuvinMember | 21 | Aug 30, 2004 | Visual |
| #8 |  Park GunwookMember | 20 | Oct 1, 2005 | Rapper, Vocalist, Dancer |
| #9 | Han YujinMember | 19 | Mar 20, 2007 | Visual, Maknae |