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Mark Bonner

Missing
Case Description
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Mark Bonner was last seen in Boulder, CO on March 20, 1978.
Last Seen: Mar 20, 1978
Links to Additional Sources (7)
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  • Mark Bonner - The Charley Project
  • Mark Allen Bonner- A Cold Missing Persons Case in Colorado - Reddit
    •     ...View 5 additional sources
    Victim Details

    Aug 05, 2014

    Jul 26, 2022

    Mark

    Bonner

    70

    23

    75 inches

    150 lbs

    White / Caucasian

    Male

    Mar 20, 1978

    Boulder

    Colorado

    Boulder County

    204

    23406

    Boulder County Sheriff's Office

    Boulder

    Colorado

    Boulder County

    80301

    Steven Ainsworth

    Detective

    5600 Flatiron Parkway, Colorado

    3034413600

    County

    Law Enforcement

    https://www.bouldercounty.org/safety/sheriff/

    78-3741

    Boulder County Sheriff's Office

    Blond/Strawberry

    Blue

    Blue

    11/26/2025


    Area Last Seen:
    Forum Posts (2)
    Does anyone have information on Mark Bonner’s family or friends at the time he disappeared? I've b... ...Read More
    12/17/2024
    Does anyone have any info on the sighting of Mark Bonner by the older man who reportedly saw him on ... ...Read More
    04/10/2024
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