Keith M Koster Obituary
With heavy hearts, we announce the death of Keith M Koster (Waupaca, Wisconsin), born in Boonville, New York, who passed away on March 5, 2024 at the age of 72. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.
He was predeceased by: his parents, Harry Koster and Dorothy Koster (Loson); his siblings, Carol Kovach (George) and Harry Jr. "Fritz" Koster (Jane); his brothers-in-law, Nicholas Macri, Louis Carbone and Edward Kramer; and his parents-in-law, Harold and Loretta Fritz.
He is survived by: his wife Barbara; his children, Valerie DeCoster (Michael), Nathan Koster (Emily) and Jason Koster (Stephanie Hazelbauer); his grandchildren, Sophia, Olivia, Dylan DeCoster, Bellin and Mara Koster; his sisters, Marilyn Macri, Patricia Carbone and Jacqueline Kramer; his sister-in-law Karen Klatt (Michael); and his cousin Thomas Ransiear (Kathy). He is also survived by numerous nieces, nephews, other relatives and friends.
In lieu of Flowers, the family will be accepting donations for bicycle trail enhancements for the Wiouwash trail, such as a bike repair station, bench or general trail maintenance.
