295 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Olga McQuinn Missing Person Case

Last seen in Rowland Heights, California on Apr 13, 1989

Victim Details

Created

Jan 13, 2019

Case Added

Jul 18, 2019

First Name

Olga

Last Name

McQuinn

Current Age

118

Age At Disappearance

Height

59 inches

Height To

61 inches

Weight

95 lbs

Weight To

105 lbs

Ethnicity

White / Caucasian

Gender

Female

Last Seen

Apr 13, 1989

City

Rowland Heights

State

California

County

Los Angeles County

Zip Code

91748

Tribal Land

Agency ID

45671

Agency Name

Los Angeles County Sheriff's Department-Monterey Park - Homicide Bureau

Agency City

Monterey Park

Agency State

California

Agency County

Los Angeles County

Agency Zip Code

91755

Agency Contact

Matthew Pereida

Contact Job Title

Sgt.

Agency Address

1 Cupania Circle, California

Agency Phone

3238905500

Agency Jurisdiction

County

Agency Type

Law Enforcement

Agency Website

http://www.lasd.org/about_us.html

Agency Case #

89-0554529

Primary Agency

Los Angeles County Sheriff's Department-Monterey Park - Homicide Bureau

Case Contributors

9789

Hair Color

Gray or Partially Gray

Left Eye Color

Brown

Right Eye Color

Brown

Last Updated

Oct 4, 2026

Area Last Seen:

Case Description

Any updates on this case? Let us know!

Summary based on the NamUs case record (MP54612) and 4 other sources

Olga Severina McQuinn, aged 81, was last seen on April 13, 1989, at her home in Rowland Heights, California. McQuinn, who suffered from dementia and a nervous condition, was known to become easily disoriented. On the day of her disappearance, she was wearing slacks and brown dress shoes. Despite searches, she has never been found, and no significant leads have surfaced since her disappearance.

Olga was described as a petite woman, standing at 5'0" and weighing around 100 pounds. She had gray hair, brown eyes, and wore eyeglasses. Her case is classified as endangered missing due to her medical conditions, which likely made her more vulnerable. Investigators have kept the case open, but no new information has been revealed.

Authorities encourage anyone with information to contact the Los Angeles County Sheriff's Department, as the mystery surrounding Olga’s disappearance remains unsolved after decades.
Last Seen: Apr 13, 1989