Floyd Radtke was born on the farm home of his parents, Rudolph and Clara (Holden) Radtke. He attended the Radtke School, and served in the U.S. Navy during World War II.
He married Florence Priebe, who was born and raised in Valley City, North Dakota. Following their marriage in 1948, they have farmed in Meadow Lake Township.
Floyd and Florence are the parents of four children: Allen, Gloria, Linda, and Karen.