(UPDATED WITH NEW FACTS)
- Jiyeon was born on June 7, 1993.
- Jiyeon has an older brother. Her brother is the ulzzang and model Park Hyo Jun.
- Jiyeon is close to her parents, but is closer to her father than her mother.
- Jiyeon said that her motivation to debut was to make enough money to be able to pay a teeth treatment for her father, and to be able to take care of her family.
- Jiyeon gave all the money she had as her first salary to her parents and her brother.
- Jiyeon doesn't like to waste money, she prefers to keep all the money possible so she can send more to her parents.
- Jiyeon admitted that she dated someone for 2 years on an interview on MBC's "Joo Byung Jin's Talk Concert".
- Jiyeon is scared of Japanese dressing rooms.
- Even though Jiyeon is T-ARA's maknae (youngest member), all her members say that Jiyeon is the member with the most leader skills and that she would make the perfect leader. Though Jiyeon said herself she doesn't really want to be the leader, but she knows her turn will come soon.
- Jiyeon's wish is to become invisible so she can get revenge. Well the revenge part is a joke, but she would like to be invisible so she can freely visit places.
- Jiyeon's ideal type is the actor Lee Chun Hee.
- Jiyeon hates when people say she looks alike to the actress Kim Tae Hee even though she likes her works.
- Jiyeon doesn't like studying.
- Jiyeon is afraid of water, heights and of the dark.
- Jiyeon doesn't know how to cook. And whenever she asked to her members to teach her, they all gave up in the end.
- Jiyeon's favorite color is sky blue, yet she prefers to wear black clothes.
- Jiyeon accepted the DH2 role because of its plot, and she wants to remember herself as being a good student. But then she also admitted that she accepted the role because Eunjung was in DH1 and so she was feeling honored to be a cast members in the second season.
- Jiyeon almost drown in water in Vietnam, and her manager had to go save her and he carried her by the waist out of water, which caused many rumors saying Jiyeon was having an affair with her manager.
- At the haunted house challenge, Jiyeon who suggested that immersion challeng abandoned Hyomin and ran away. Hyomin said she almost died from fright.
- Jiyeon is seen as a cold person, and usually gives bad first impressions. She says it's because she feels shy, but Eunjung said that Jiyeon was actually having trust issues and doesn't trust people easily, so she often is seen as a cold person. Yet all her members says she has the warmest heart.
- Jiyeon always protects her members and look after them all the time. Her members feel all of this awkward because she's the maknae, and they feel bad because they're supposed to be the one to protect her.
- Jiyeon is mastering Taekwondo.
- Jiyeon is the best dancer among the T-ARA members, and she got praised a lot by the best dancers of the K-POP industry as Eunhyuk (Super Junior), Hyoyeon (Girls' Generation), Kahi, Hoya (INFINITE), Kikwang (B2ST), and many other idols. Mnet Media once said that in all the companies they own, Jiyeon is their best dancer.
- Jiyeon's best friend is IU. But she's also close to Joon (MBLAQ), Suzy (Miss A), Luna (F(x)), and Junhyung (B2ST).
- Jiyeon is close to the main rapper of B2ST, Junhyung. They both know each other since middle school. Junhyung said that Jiyeon and him were always together in middle school even though they're not the same age and weren't in the same classes. He said that when they were kids, they used to walk around holding hands like kids because Jiyeon always felt insecure, and he always felt like protecting her. They also had a scandal together since they both were seen holding hands during rehearsal. But they both said that since they were used to it ever since they were kids, they didn't even notice it.
- Jiyeon is often chosen as the ideal type of many idols and actors, as well as models.
- Jiyeon loves making her eyes smoky. She says it's like her sign. It makes her eyes deeper, and she likes it.
- Jiyeon is known as someone who expresses everything through her eyes. Many people said that Jiyeon's eyes can be really scary. But that it makes her look even more beautiful than she already is.
- Jiyeon says herself she's not made for singing. She says that her voice fits more with ballads, and she also prefers to sing ballads.
- Even though Jiyeon is the maknae of T-ARA, her members all say that on stage, Jiyeon has the most charisma. She becomes a brand new person on stage, and they all feel envious of her charisma.
- Qri once said that Jiyeon could attract any guy if she wanted. But Jiyeon doesn't like to attract guys or to flirt. So she prefers to stay expressionless or to just be herself.
- Jiyeon's nickname is Baby Dino, or forever maknae.
- The actor Kim Sooro said, "The reasons a person is adored begins with their actions. Park Ji Yeon is the most professional among the femal hoobaes I know."
- Jiyeon often performed on stage even when she was sick, or injured or about to faint. She once was feeling really bad before a performance for their promotion of "Cry Cry", and she almost fainted on stage. Right after the performance, she fainted and was rushed to hospital.
- Jiyeon is known as someone who's overworking, and often faints due to exhaustion.
- Jiyeon's health is known to be fragile.
- Jiyeon is the closest to Eunjung and Hyomin.
- Jiyeon is left handed.
- Jiyeon has a small mole
near her right underarm.
- Jiyeon's first kiss on camera was with the actor Yoo Seung Ho. But she recently admitted that she had her first kiss when she was still in high school.
- Jiyeon once ran away from home. But she learned that her brother ran away on the same day, feeling worried, she went back home and helped her parents to look for her brother.
- Jiyeon loves acting in horror movies, yet she hates watching horror movies.
- Jiyeon learns choregraphies very fast. Her members feel envious of her because of this.
- Qri and Hyomin think that Jiyeon is the prettiest member.
- When Jiyeon is in a bad mood, peole usually notice because she smiles less than usual, and even when she smiles, her eyes are cold. So fans always know Jiyeon's mood. Lately, fans noticed that Jiyeon wasn't good, and rumors started spreading. Jiyeon never answered to any questions, and only told her fans not to worry.
