- STAYC is the first-ever idol group to debut under Highup Entertainment.
- The name 'STAYC' was chosen from a list of several candidates; other potential names included Oriental Girls, Favorites, and Molar.[1]
- At the time of their debut in November 2020, the group's average age was 18.8 years old.
- The group's average height is 165 cm (5 ft 5 in) tall.
- All six members were born in the 21st-century.
- The group collectively names fellow girl group Girls' Generation as their role model.[2]
- The age difference between the eldest (Sumin) and maknae (J) is 3 years, 8 months, and 26 days.
- STAYC has their own official fragrance called 'Teen Fresh'.
- Fragrance cards were included in the physical album for "Star To A Young Culture".
- Perfume bottles were sold as part of the album merchandise for "STAYDOM".
- None of the members share a surname, birth month, zodiac sign, or birth city.
- As of 2023, Their song's lyrics revolve around "not knowing what love is".