Member ages
SF9 Member Ages and Birthdays
SF9 member ages and birthdays ranked oldest to youngest, from In Seong at age 33 to Cha Ni at age 26.
Oldest to youngest
| Rank | Member | Age | Birthday | Position |
|---|---|---|---|---|
| #1 |  In SeongMember | 33 | Jun 12, 1993 | Main Vocalist |
| #2 |  Young BinMember | 32 | Nov 23, 1993 | Leader, Lead Dancer, Lead Rapper |
| #3 |  Jae YoonMember | 32 | Aug 9, 1994 | Sub Vocalist |
| #4 |  Da WonMember | 31 | Jul 24, 1995 | Sub Vocalist |
| #5 |  ZuhoMember | 30 | Jul 4, 1996 | Main Rapper |
| #6 |  Ro WoonFormer member | 30 | Aug 7, 1996 | Lead Vocalist, Visual, Center |
| #7 |  Yoo Tae YangMember | 29 | Feb 28, 1997 | Sub Vocalist, Main Dancer |
| #8 |  Hwi YoungMember | 27 | May 11, 1999 | Sub Rapper |
| #9 |  Cha NiMember | 26 | Jan 17, 2000 | Maknae, Face Of The Group, Main Dancer, Sub Rapper |