Where Is ‘1923’ Filmed? ‘Yellowstone’ Offers Only Some Clues

Like its predecessor, 1923 is also mostly shot in Montana, per The U.S. Sun, including the towns of Butte, Park City, and Dillon, as well as several other spots. However, it might surprise fans to learn that some of the shooting locations were outside of the U.S., and include Malta, South Africa, and Tanzania.

Source: https://www.distractify.com/p/where-is-1923-filmed