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Marilyn Koski Missing Person Case

Last seen in Portland, Oregon on Jan 01, 1989

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Case Description

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The start of a new year brought a somber mystery to Portland, Oregon, in 1989 with the disappearance of 35-year-old Marilyn Sue Koski. In the early hours of January 1st, Marilyn, a resident of a houseboat on the Willamette River, vanished. She was a woman with a notable educational background, holding degrees from both Brigham Young University and Oregon State University, and had previously dedicated her time to teaching physical education and health. Concern for her well-being grew after two no ...Read More
Last Seen: Jan 01, 1989

Links to Additional Sources (6)

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  • Missing Person / NamUs #MP13616
  • Marilyn Sue Koski - The Charley Project
    •     ...View 4 additional sources

    Victim Details

    Jan 16, 2012

    Jul 17, 2023

    Marilyn

    Koski

    70

    35

    62 inches

    64 inches

    130 lbs

    140 lbs

    White / Caucasian

    Female

    Jan 01, 1989

    Portland

    Oregon

    Multnomah County

    No

    11218

    Multnomah County Sheriff's Office

    Portland

    Oregon

    Multnomah County

    97214

    Keith Krafve

    Detective Sgt.

    501 Southeast Hawthorne Boulevard, Suite 350, Oregon

    5039884300

    County

    Law Enforcement

    https://www.mcso.us/site/

    89.24

    Multnomah County Sheriff's Office

    Blond/Strawberry

    Blue

    Blue

    06/20/2026


    Area Last Seen:

    Forum Posts (3)

    I’ve been revisiting Marilyn Sue Koski’s case and something about her leaving those notes just d... ...Read More
    05/27/2024
    Has anyone looked into the local community around where Marilyn was living at the time? I mean, livi... ...Read More
    01/31/2024
    Has anyone else been following the Marilyn Sue Koski case from 1989? I was reading about her living ... ...Read More
    06/27/2023

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