Eleven was 12 years old in Season 1 of Stranger Things.

Character Background

Season 1 takes place in 1983, when Eleven (born Jane Ives on June 7, 1971) had lived in Hawkins Lab her entire life until escaping. Her age aligns with the other main kids (Mike, Dustin, Lucas, and Will), all portrayed as around 12 and in middle school.

Supporting Details

References in the show, like her mother's 12-year search, reinforce this timeline. While some fan discussions speculate slight variations (e.g., 11-13), official wiki and cast analyses consistently settle on 12. By later seasons, she ages up accordingly (e.g., 13 in Season 2).