Filming the Ranch
Although The Rifleman is set in North Fork, a town in what was known as New Mexico Territory in the show, the television series was filmed in Los Angeles. The ranch scenes included several locations, including Malibu Creek State Park, Calabasas, Iverson Ranch in Chatsworth and what was Corriganville Movie Ranch.
Many of the scenes also take place on Paramount Ranch, in the Santa Monica Mountains. Since this is a recreational area, fans of the show have access to hike through the structures of the Old Western town in Agoura, CA.