“Little House on the Prairie” was filmed mainly at Big Sky Ranch in Simi Valley, California, not in the real Walnut Grove, Minnesota. Interior scenes were done on Hollywood soundstages, with some additional location work in Arizona and other parts of California.

Main filming locations

  • Big Sky Ranch, Simi Valley, California – Primary outdoor set for the Ingalls farm and the town of Walnut Grove; most exterior shots for the series were done here.
  • Hollywood studio soundstages (including major Los Angeles studios) – Used for interiors such as the Ingalls’ home, school, church, and various town buildings.

Other notable locations

  • Old Tucson, Tucson, Arizona – Used to represent the town of Mankato, Minnesota, and other western-town settings in certain episodes.
  • Additional California ranch areas (e.g., Sonora/Red Hills region) – Provided extra outdoor landscapes and frontier-style scenery when a different look from Simi Valley was needed.

Why it looked like Minnesota

  • The production chose Southern California ranch land for reliable weather and easy access to studios, then dressed the sets to evoke 19th‑century Minnesota prairies.
  • Rolling hills, dirt roads, and hand‑built wooden structures at Big Sky Ranch helped create the show’s iconic small‑town frontier atmosphere.

Quick HTML table of key spots

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Location Real place What it was used for
Big Sky Ranch Simi Valley, California Main exteriors: Ingalls farm, Walnut Grove, hills and fields.
Hollywood / LA studios Los Angeles, California Interior sets like the Ingalls house, school, and church.
Old Tucson Tucson, Arizona Town scenes, including stand‑in for Mankato, Minnesota.
Other CA ranch areas Various in California Supplementary outdoor prairie and frontier landscapes.
Information gathered from public forums or data available on the internet and portrayed here.