When Ray Park Sims was born on 4 November 1891, in Kansas City, Jackson, Missouri, United States, his father, Charles Milton Sims, was 27 and his mother, Moselle R Park, was 22. He married Pauline Hoffman on 22 March 1916, in Walla Walla, Walla Walla, Washington, United States. They were the parents of at least 1 daughter. He lived in Charleston, Kitsap, Washington, United States in 1920. He died on 23 March 1977, in Kitsap, Washington, United States, at the age of 85.