Member ages
ICHILLIN' Member Ages and Birthdays
ICHILLIN' member ages and birthdays ranked oldest to youngest, from Jiyoon at age 25 to Chowon at age 20.
Oldest to youngest
| Rank | Member | Age | Birthday | Position |
|---|---|---|---|---|
| #1 |  JiyoonMember | 25 | Sep 15, 2000 | Main Vocalist |
| #2 |  E.JIMember | 25 | Nov 8, 2000 | Leader, Main Dancer, Sub-Vocalist |
| #3 |  JackieMember | 24 | Nov 17, 2001 | Main Rapper, Lead Dancer |
| #4 |  JoonieMember | 24 | May 24, 2002 | Lead Vocalist, Sub-Rapper |
| #5 |  ChaerinMember | 23 | Mar 31, 2003 | Main Vocalist |
| #6 |  SoheeFormer member | 22 | Jan 1, 2004 | Sub-Vocalist, Sub-Dancer |
| #7 |  YejuMember | 21 | Sep 1, 2004 | Lead Dancer, Sub-Vocalist, Center |
| #8 |  ChowonMember | 20 | Aug 18, 2005 | Main Dancer, Sub-Vocalist, Maknae |