A preservationist and conservationist, Carrillo served on the California Beach and Parks commission for eighteen years and played a key role in the state's acquisition of Hearst Castle at San Simeon, Los Angeles Arboretum, and Anza-Borrego Desert State Park. He was eventually made a goodwill ambassador by the California governor at the time. As a result of his service to California, west of Malibu on CA-1 Pacific Coast Highway, a 1.5 mile beach is named Leo Carrillo State Park in his honor. Fittingly, this beach named for an actor appears in many movie and TV productions due to its dramatic cliffs, rocks and cave. The City of Westminster, California named an elementary school for him. Leo Carrillo Ranch Historic Park, originally Rancho de los Kiotes, in Carlsbad, California, is a registered California Historical Site. Rancho Carrillo Trail, also in Carlsbad, is named for Leo Carrillo. Carrillo was a Republican. In 1944, for instance, he performed a "Wild West" act at the massive rally organized by David O. Selznick in the Los Angeles Coliseum in support of the Dewey-Bricker ticket as well as Governor Earl Warren of California, who would become Dewey's running mate in 1948 and later the Chief Justice of the United States. The gathering drew 93,000, with Cecil B. DeMille as the master of ceremonies and with short speeches by Hedda Hopper and Walt Disney. Among the others in attendance were Ann Sothern, Ginger Rogers, Randolph Scott, Adolphe Menjou, Gary Cooper, Edward Arnold, William Bendix, and Walter Pidgeon. In 1913, Carrillo married Edith Shakespeare Haeselbarth, of Nyack, New York, whom he met backstage at the New York City theater where she had seen him perform. They remained together until her death in 1953. They lived in "Los Alisos" ("The Sycamores") on Channel Road, in Santa Monica Canyon. The Carrillos had one child, a daughter, Marie Antoinette. They spent part of their time at their ranch in Carlsbad, California. Carrillo frequently permitted Boy Scout groups to camp on the grounds. Leo Carrillo died of cancer in 1961 at the age of eighty-one and is interred at Santa Monica's Woodlawn Memorial Cemetery. For his contributions to the film industry, Leo Carrillo has a motion pictures star on the Hollywood Walk of Fame at 1635 Vine Street, and a second star at 1517 Vine Street for his work in television.