Popsugar Celebrity Netflix How Old Are the Cast Members of Stranger Things? The "Stranger Things" Cast Members Are a Lot Older Than Their Characters 30 May 2022 by Britt Stephens View On One Page Photo 14 of 14 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 14 Priah Ferguson as Erica Sinclair: 15 Years Old Ferguson is 15, but her character — Lucas's little sister — is 11 in "Stranger Things" season four. Previous Next Start Slideshow NetflixStranger ThingsFall TVCelebrity FactsTV