The origin in the U.S.
The idea of Father's Day was conceived more than a century ago by Sonora Dodd of Spokane, Washington, while she listened to a Mother's Day sermon in 1909. Dodd wanted a special day to honor her father, William Smart, a widowed Civil War veteran who was left to raise his six children on a farm. A day in June was chosen for the first Father's Day celebration, June 19, 1910, proclaimed by Spokane's mayor because it was the month of Smart's birth.
The first presidential proclamation honoring fathers was issued in 1966 when President Lyndon Johnson designated the third Sunday in June as Father's Day. Father's Day has been celebrated annually since 1972 when President Richard Nixon signed the public law that made it permanent.
How many fathers in the U.S.?
The estimated number of fathers across the nation in 2014, the most recent year for which data are available.
The number of married fathers living with children 17 and under in 2016.
The number of single fathers in 2016 living with their children 17 and under; 17 percent of single parents were men.
The number of fathers who are also grandfathers.
The estimated number of stay-at-home dads in 2016. These married fathers with children 14 and under have remained out of the labor force for at least one year, primarily so they can care for the family while their wife works outside the home. These fathers cared for about 392,000 children 14 and under.
Times are a-changing
The estimated number of Millennial dads (ages 17 to 37) who say they have changed more diapers than their fathers, according to a WaterWipes survey of Millennial parents.
Sources: U.S. Census Bureau & USA Today