Mike Wheeler is 17 years old in season 5 of Stranger Things.

Quick answer

  • In Stranger Things season 5, Mike is written as a 17-year-old high school senior, the same age as Eleven, Will, Lucas, and Dustin in the final season.
  • Finn Wolfhard, who plays Mike, is in his early 20s in real life during season 5’s release, so the actor is a few years older than his character.

Extra context

Several season 5 age guides for the Hawkins kids list Mike’s character age as 17, matching the show’s late–high school timeline. These guides also confirm that the core friend group (Mike, Eleven, Will, Lucas, Dustin, Max) is all kept at roughly the same age for the final season’s story.

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