Member ages
USPEER Member Ages and Birthdays
USPEER member ages and birthdays ranked oldest to youngest, from Yeowon at age 20 to Roa at age 16.
Oldest to youngest
| Rank | Member | Age | Birthday | Position |
|---|---|---|---|---|
| #1 |  YeowonFormer member | 20 | Apr 10, 2006 | Leader, Rapper |
| #2 |  SoeeMember | 19 | Mar 11, 2007 | Rapper |
| #3 |  SianMember | 18 | Aug 18, 2007 | Main Vocalist, Rapper, Dancer |
| #4 |  SeoyuMember | 18 | Nov 26, 2007 | Main Dancer |
| #5 |  DaonMember | 17 | Jul 7, 2008 | Vocalist |
| #6 |  ChaenaMember | 17 | Jun 8, 2009 | Vocalist |
| #7 |  RoaMember | 16 | Oct 28, 2009 | Vocalist, Maknae |