- Sonora Smart Dodd of Spokane, Washington, is credited with starting Father's Day after hearing a sermon on Mother's Day while attending church with her father. Dodd wanted to honor her father, William Jackson Smart, a Civil War veteran who raised six children after his wife died during childbirth.
- According to Hallmark, Father's Day is the fourth-largest card-sending occasion with 72 million cards given every year.
- Fifty percent of all Father's Day cards are purchased for fathers, according to Hallmark. Almost 20 percent of Father's Day cards are given to husbands.
- The U.S. Census Bureau estimates there were 72.2 million fathers in the United States in 2014.
- In the underwater world of the seahorse, it's the male that gets to carry the eggs and birth the babies.
- Dick Hoyt has pushed and pulled his son, Rick, who has cerebral palsy, through hundreds of marathons and triathlons. Using a custom-designed computer, Rick is able to communicate. After they ran their first five-mile race together when Rick was in high school, Rick sent his father this message: "Dad, when we were running, it felt like I wasn't disabled anymore!"
- George Washington, the father of our country, had no children of his own. He did adopt the two children from Martha Custis' first marriage.
Facts by Sean McVeigh, factologist.