| Full Name | Kim Yoo-yeon |
| Stage Name | YooYeon |
| Native Name | 김유연 |
| Birthday | February 9, 2001 |
| Age | 24 years and 4 months old |
| Zodiac Sign | Aquarius |
| Birthplace | Banpo-dong, Seocho-gu, Seoul, South Korea |
| Height | 5’5″ (165 cm) |
| Weight | 101.4 lbs (46 kg) |
| Blood Type | B |
| MBTI | INTP |
| Education | Ewha Womans University |
| Languages | Korean, English, Japanese |
| Group | TripleS Hatchi! |
| Social Media | Instagram: [@kimyooyeon_] |