The TV series Yellowstone was filmed in multiple real-life locations across Montana, Utah, and Texas. Montana:

• The iconic Dutton Ranch scenes were primarily filmed at the Chief Joseph Ranch near Darby, Montana. This is a real, working cattle ranch with a historic 5,000-square-foot log house that serves as the Dutton family home in the show

• Other Montana filming locations include Missoula (with scenes at Ryman Street, Ruby’s Café, Missoula Community Medical Center, Missoula County Courthouse, and nearby Garlington Building), the Crow Indian Reservation for the Broken Rock Indian Reservation scenes, and Helena for the Governor's Office scenes

• From season 4 onward, production shifted almost exclusively to Montana to film where the story is set

Utah:

• For the first three seasons, much of the filming took place in Utah, despite the show being set in Montana. Key Utah locations include Ogden (including 25th Street and Ogden Pioneer Stadium), Spanish Fork Fairgrounds (for rodeo scenes), Park City (Dan Jenkins’ lodge), and other towns like Heber City, Oakley, Kamas, Grantsville, and Logan

• Utah provided many of the show's landscapes such as farmlands, plains, and wilderness for the early seasons

Texas:

• Some scenes in season 4 were filmed in Texas, including at the 6666 Ranch near Guthrie and Mary’s Brazos Cafe in Parker County, North Texas

In summary, while Yellowstone is set in Montana, early seasons were mostly filmed in Utah, but later seasons moved production to Montana, with some scenes shot in Texas as well