The California town where the Byers family moves in Stranger Things season 4 is Lenora Hills.
After the events at Starcourt Mall, Joyce Byers, Jonathan, Will, and Eleven leave Hawkins and begin a new life in Lenora Hills, a fictional California community. Their relocation takes place after Hopper is presumed dead, and the family hopes that distance will provide a safer and quieter environment.
The move creates a major contrast with Hawkins. In Lenora Hills, Eleven struggles with school and bullying, Will feels isolated, and Jonathan works at Surfer Boy Pizza with his friend Argyle. The California storyline eventually connects back to the central supernatural conflict when military forces search for Eleven and the group turns to Dr. Owens for help.
Viewers sometimes shorten the name to “Lenora” because the town is referred to that way in dialogue and summaries. Lenora Hills is the fuller name used for the fictional town and its high school. It should also not be confused with Hawkins, Indiana, where the parallel Vecna storyline unfolds.