When Hiram Delos Pickett was born on 3 May 1875, in Cass, Iowa, United States, his father, Charles Jackson Pickett, was 37 and his mother, Elizabeth Jane Jackson, was 24. He married Tassie Josephine Wood on 12 August 1903, in Muskogee, Oklahoma, United States. They were the parents of at least 3 sons and 1 daughter. He lived in Washington Township, Johnson, Missouri, United States in 1920 and Sapulpa, Creek, Oklahoma, United States for about 10 years. He died on 3 February 1952, at the age of 76, and was buried in Washington, District of Columbia, United States.