Member ages
IDID Member Ages and Birthdays
IDID member ages and birthdays ranked oldest to youngest, from Jang Yong-hoon at age 21 to Jeong Semin at age 17.
Average19.0years old
Oldest to youngest
| Rank | Member | Age | Birthday | Position |
|---|---|---|---|---|
| #1 | Jang Yong-hoonMember | 21 | Apr 20, 2005 | Member |
| #2 |  Kim MinjaeMember | 20 | Aug 17, 2005 | Member |
| #3 |  Park WonbinMember | 20 | Apr 19, 2006 | Member |
| #4 |  Chu YoochanMember | 19 | Oct 3, 2006 | Member |
| #5 |  Park SeonghyeonMember | 18 | Oct 5, 2007 | Member |
| #6 |  Baek JunhyukMember | 18 | Jun 7, 2008 | Member |
| #7 | Jeong SeminMember | 17 | Oct 10, 2008 | Member |