Mark Koster, 61, was found dead Wednesday, Nov. 7, 2012, in Sac City. Cause of death has not been determined.
A funeral will be held at a later date.
Mark was born in Lake City, Iowa, May 9, 1951, a son of Edgar and Delores (Bachman) Koster. In 1957, the family moved to Stacyville, Iowa, where Mark attended Visitation Grade School and Marian High School.
Mark graduated from St. Ansgar High School in 1969 and Mason City Junior College in 1972. He served two years in the U.S. Marines and was honorably discharged in 1974.
Mark lived in Texas and Florida before settling in Sac City, where he resided until his death.
Mark is survived by his father, Edgar Koster, Des Moines; sisters Karen Cain, Janesville, Wis., Jane Koster, Des Moines, Nancy (Mike) Teasdale, Edina Minn., Kristy Koster, Ames, and Mary (Efren) Vintimilla, Asheville, N.C.; and brothers Daniel Koster, Wall Lake, Dale (Jennifer) Koster, Chandler, Ariz., Paul (Carole) Koster, Bloomington, Minn. and Craig (Naoise) Koster, Eden Prairie, Minn.; five nephews; 12 nieces; two great-nephews; and many aunts, uncles and cousins.
Mark was preceded in death by his mother, Delores Koster, in 2000; brother, Pat Koster, in 1988; and brother-in-law, Larry Cain in 2009.
In lieu of flowers, memorials made be made to Mark Koster Memorial Fund c/o Karen Cain 3742 Skyview Drive, Janesville, Wis. 53546.
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