Screen Rant

  • The Stranger Things kids are 13 or 14 years old in season 3. 1 / 12

    Stranger Things 3 Soundtrack Cover Vertical

  • Meanwhile, the older group of "kids" is around 18 or 19. 2 / 12

    Stranger Things 3 Billy Hargrove TLDR Vertical

  • But the actors who play them have a wide range of ages, from 14 to 27. 3 / 12

  • Noah Schnapp (Will) is the youngest at 14. 4 / 12

    Noah Schnapp As Will In Stranger Things 3

  • Millie Bobby Brown (Eleven) is 15, while Finn Wolfhard (Mike) is 16. 5 / 12

  • Gaten Matarazzo (Dustin) is also 16. 6 / 12

    Gaten Matarazzo Stranger Things Vertical

  • Caleb McLaughlin (Lucas) and Sadie Sink (Max) are both 17. 7 / 12

    Sadie Sink As Max In Stranger Things 3

  • While Nancy is around 18, Natalia Dyer is 22. 8 / 12

    Natalia Dyer As Nancy In Stranger Things 3

  • And Charlie Heaton, who plays 18-year-old Jonathan, is 25! 9 / 12

    Charlie Heaton As Jonathan On Stranger Things 3

  • Dacre Montgomery (Billy) is 24 years old. 10 / 12

    Dacre Montgomery As Billy In Stranger Things 3

  • Joe Keery (Steve) is the oldest Stranger Things "kid" at 27. 11 / 12

    Joe Keery As Steve In Stranger Things 3

  • We don't know the ages for new characters played by Maya Hawke (20) and Francesca Reale (24). 12 / 12