Jon S. Koski Obituary
The passing of Jon S. Koski of Superior, Wisconsin occurred on August 9, 2026. Jon, born on May 15, 1942, is remembered by those who knew him. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.
Jon touched many lives and will be remembered fondly for the moments shared and the memories created. Family, friends, and colleagues extend their love and support during this time. While Jon’s presence will be missed, the influence he had on others will remain. Those who knew him will carry forward memories that reflect his character and spirit.
He was predeceased by: his parents, Eleanor Koski (Maki) and Sephard Koski; and his brothers, James Koski and Jerome Koski. He is survived by: his sister Judith Hoff. He is also survived by numerous nieces and nephews.
