The Clampett family in The Beverly Hillbillies were from the Ozark Mountains, generally understood to be in rural Missouri/Arkansas, not from California.

Show origin in the story

  • The pilot and narration refer to taking the family “back to their home in the Ozarks,” anchoring their fictional roots in that mountain region.
  • Reference works on the series describe Jed Clampett as an Ozark mountaineer who struck oil on his land before moving the family to Beverly Hills.

Why the Ozarks specifically

  • The Ozarks span primarily southern Missouri and northern Arkansas, so fans and commentators usually place the Clampetts’ home somewhere in that area rather than in a named town.
  • This choice fits the show’s portrayal of an isolated, rural, “hillbilly” community suddenly thrust into rich, urban Beverly Hills life.

TL;DR: When people ask “where were The Beverly Hillbillies from,” the in‑universe answer is: they were a poor rural family from the Ozarks (often assumed to be Missouri/Arkansas) who struck oil and moved to Beverly Hills.

Information gathered from public forums or data available on the internet and portrayed here.