Winifred Ruth (married on August 11, 1941; she died on February 21, 1969 at the scene of the car accident that also lead to her husband's death)
One child: Susan (daughter)
Family Members Who Have Served in the Minnesota Legislature:
He was born and raised on a farm in West Lynn Township, Minnesota.
"Popp, 65, was elected to the Senate in 1958 as an independent, but he caucused as a Conservative." (Obituary, Minneapolis Tribune, February 22?, 1969)
His sister, Mrs. Fred Bernhagen, was the aunt of Rep./Sen. John Bernhagen.
He was a Master of Temple Lodge No. 59, Ancient Free and Accepted Masons (A.F. and A.M.), a member of Zuhrah Temple, a member of tje Acacia Fraternity, and a member of the McLeod County Historical Society.
He died while in office on February 21, 1969.
He was killed after his car skidded on ice and collided with a pickup truck 18 miles outside of Hutchinson, Minnesota. He was declared dead on arrival at Methodist Hospital in St. Louis Park, Minnesota. His funeral was held at Bethlehem United Methodist Church. He was buried in Oakland Cemetery.
He was a member of the Evangelical United Brethren Church which merged with the United Methodists. He was a member of Bethlehem United Methodist Church.
Religion provided by In Memoriam and the Minneapolis Star, January 1961.