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Katharine Bay Missing Person Case

Last seen in Riverside, California on May 31, 2002

Victim Details

Jul 8, 2018

Aug 13, 2020

Katharine

Bay

42

18

67 inches

110 lbs

White / Caucasian

Female

May 31, 2002

Riverside

California

Riverside County

No

38854

Riverside Police Department

Riverside

California

Riverside County

92505

Brenda Gonzales

Police Service Representative

10540 Magnolia Avenue, California

9513542007

Local

Law Enforcement

https://www.riversideca.gov/rpd/default.asp

P302161339

Riverside Police Department

na

Blond/Strawberry

Blue

Blue

Oct 8, 2026


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP50996) and 4 other sources
Katharine Jean Bay, an 18-year-old from Riverside, California, went missing on May 31, 2002. Described as 5'7", with blonde hair and blue eyes, Katharine may have used the last name Anderson. She was last seen in Riverside, but there are few available details about the circumstances surrounding her disappearance. Despite this, investigators suspect foul play might have been involved in her case. Over two decades have passed, and she has never been heard from again.

Efforts to find Katharine have spanned years, and she remains listed as an endangered missing person. Her case is cataloged in databases like NamUs and the California Attorney General's missing persons listings, but no significant leads have emerged. Family, friends, and true crime enthusiasts continue to seek information, hoping to uncover what happened to her on that day in 2002.

With so little known about her disappearance, Katharine's case is still open, and the Riverside Police Department continues to handle it. Any information from the public could be crucial in resolving this long-standing mystery.
Last Seen: May 31, 2002

Links to Additional Sources (4)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP50996 - Office of Justice Programs
  • Katharine Jean Bay | State of California - Department of Justice
  • Katharine Bay | International Missing Persons Wiki - Fandom
  • Katharine Jean Bay - The Charley Project

    • Possible Unidentified Matches (2)

    Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

    76%Possible
    Jane Doe — Cerritos, California - unidentified case UP85998
    Jane Doe — Cerritos, California
    UP85998 • Found Oct 19, 2021
    View case
    Sex ✓Female
    Age 100%Est. 18–25 vs 18 when missing
    Race 100%White
    Location 92%40 mi away, same state
    TimingFound 19 years after last seen
    Height 100%5'2"–5'8" vs 5'7"
    Hair 50%Brown vs Blond
    75%Possible
    Jane Doe — Los Angeles, California - unidentified case UP89347
    Jane Doe — Los Angeles, California
    UP89347 • Found Jan 16, 2022
    View case
    Sex ✓Female
    Age 83%Est. 40–55 vs 18 when missing
    Race 100%White
    Location 88%54 mi away, same state
    TimingFound 20 years after last seen
    Height 100%5'7"–5'9" vs 5'7"
    Weight 100%110–120 lb vs 110 lb
    Hair 50%Brown vs Blond
    Eyes 50%Green vs Blue

    These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

    Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.

    Latest News

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    Forum Posts (1)

    I’ve been following Katharine Jean Bay’s case for a while, and one thing that always stands out to... ...Read More
    02/18/2023

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