Overview

• Full name: Tiffany Debra Humphrey
• Age when last seen: 24
• Date of birth: August 23, 1986
• Date last seen: February 25, 2011
• Location associated with the investigation: Contra Costa County, California
• Exact last-seen city: Not specified in the available official record
• Case classification: Missing person
• Reporting agency: Contra Costa County Sheriff’s Office
• Official case number: SP1103555
• Public case status: Listed as missing by the California Department of Justice

The official missing-person record establishes Tiffany’s last-seen date and identifying characteristics but provides little information about the events immediately preceding her disappearance. No publicly verified account reviewed for this article establishes what happened to her after February 25, 2011.

Detailed Case Breakdown

Case Summary

Tiffany Debra Humphrey was 24 years old when she was last seen on February 25, 2011. Her disappearance is documented in the California Department of Justice’s missing-person database, which identifies the Contra Costa County Sheriff’s Office as the reporting law enforcement agency. More than fifteen years later, her whereabouts remain publicly unresolved.

• Full name: Tiffany Debra Humphrey
• Age when last seen: 24
• Date of birth: August 23, 1986
• Date last seen: February 25, 2011
• Location associated with the investigation: Contra Costa County, California
• Exact last-seen city: Not specified in the available official record
• Case classification: Missing person
• Reporting agency: Contra Costa County Sheriff’s Office
• Official case number: SP1103555
• Public case status: Listed as missing by the California Department of Justice

The official missing-person record establishes Tiffany’s last-seen date and identifying characteristics but provides little information about the events immediately preceding her disappearance. No publicly verified account reviewed for this article establishes what happened to her after February 25, 2011.

Background and Circumstances of Tiffany Humphrey’s Disappearance

Tiffany Debra Humphrey was born on August 23, 1986. She was a young adult when she disappeared in February 2011. California authorities identify her as female and describe her race as Other Asian in the state’s missing-person record.

According to the California Department of Justice, Tiffany had black hair and brown eyes. She was approximately 5 feet 4 inches tall and weighed about 110 pounds. These physical characteristics are part of the identifying information maintained by the state to assist with missing-person investigations.

Little verified biographical information about Tiffany is available in the public records reviewed. Her occupation, education, family circumstances, personal interests, and living arrangements at the time of her disappearance have not been established through reliable case-specific documentation.

February 25, 2011: The Last Confirmed Date

The California Department of Justice records February 25, 2011, as the date Tiffany was last seen. The Contra Costa County Sheriff’s Office is listed as the agency responsible for the missing-person report.

Although the case is associated with Contra Costa County, the publicly accessible state record does not specify an exact last-seen address, neighborhood, city, or location. It also does not describe who last saw Tiffany, what she was doing, or whether she was traveling when she disappeared.

No verified public description of the clothing Tiffany was wearing that day was located. Similarly, the available official information does not establish whether a vehicle, personal belongings, telephone, or other possessions were associated with her disappearance.

These gaps are important. Without a documented account of Tiffany’s final known movements, it would be misleading to construct a narrative about where she went, whom she met, or what may have happened afterward.

Investigation History and Available Evidence

The strongest publicly verifiable documentation of Tiffany Humphrey’s disappearance is the missing-person listing maintained by the California Department of Justice. The record identifies the Contra Costa County Sheriff’s Office as the reporting agency and assigns the case number SP1103555.

The existence of this official record confirms that Tiffany’s disappearance was reported to law enforcement and entered into California’s missing-person information system. It does not, by itself, reveal the investigative steps undertaken by detectives or the evidence collected.

Searches, Interviews, and Investigative Activity

No case-specific public investigative report was located that reliably documents the locations searched for Tiffany, the witnesses interviewed, or the results of any searches conducted after February 25, 2011.

This absence of publicly available detail should not be interpreted as proof that searches or interviews never occurred. Investigative files may contain information that has not been released publicly, and law enforcement agencies do not necessarily publish every action taken during a missing-person investigation.

Physical and Forensic Evidence

The California Department of Justice’s public listing does not describe recovered physical evidence, surveillance footage, electronic communications, fingerprints, or other forensic findings connected to Tiffany’s disappearance.

The state record specifically indicates that dental X-rays are not available. This is a limitation of the information documented in the public listing and should not be taken as a complete description of every identification resource that investigators might possess.

California operates missing-person identification programs that can involve forensic comparisons and DNA analysis. However, no verified case-specific announcement was located establishing that Tiffany’s disappearance has been examined through DNA testing, investigative genetic genealogy, or a newly identified set of human remains.

Suspects, Arrests, and Criminal Proceedings

The reviewed official missing-person information does not identify a suspect or person of interest in Tiffany’s disappearance. No reliably documented arrest, criminal charge, prosecution, or court judgment connected specifically to her case was located.

Importantly, Tiffany’s missing-person classification is not equivalent to a confirmed homicide determination. The publicly verified information does not establish that she was killed or identify a criminal act responsible for her disappearance.

Theories and Unresolved Questions

Tiffany Humphrey’s disappearance remains difficult to assess publicly because the available official account contains so few details about the circumstances surrounding her last known sighting.

There is no reliable public evidence in the reviewed sources that establishes whether Tiffany left voluntarily, experienced an accident, encountered a medical emergency, became the victim of a crime, or disappeared under some other circumstances. None of these possibilities should be presented as an established explanation.

Questions That Remain Unanswered

One central question is where Tiffany was last seen on February 25, 2011. The exact location could provide important context for understanding her movements, but it is not identified in the publicly accessible state record.

Another unanswered question concerns the last person known to have communicated with or seen her. The available official listing does not identify a witness or describe Tiffany’s final confirmed contact with another person.

It is also unknown from the reviewed public documentation whether investigators obtained information from financial records, telephone records, transportation records, surveillance systems, or other potential sources of evidence.

These are investigative questions rather than evidence that a particular event occurred. Without verified findings, it would be inappropriate to attribute Tiffany’s disappearance to a specific individual, motive, or theory.

The Importance of Reliable Information

Missing-person investigations can attract speculation, especially when years pass without a public resolution. In Tiffany’s case, the lack of detailed public reporting makes it particularly important to distinguish official information from assumptions or unsupported online claims.

Anyone who believes they have relevant information should provide it directly to the investigating agency rather than publicly naming individuals or circulating unverified accusations.

Latest Publicly Available Investigative Updates

As of October 31, 2026, Tiffany Debra Humphrey remains listed as a missing person in the publicly accessible California Department of Justice database. Her record continues to identify February 25, 2011, as her last-seen date and the Contra Costa County Sheriff’s Office as the reporting agency.

No publicly confirmed recent investigative developments were located in the sources reviewed for this article. Specifically, no verified recent announcement established that Tiffany had been found, that human remains had been identified as hers, that an arrest had been made, or that investigators had announced a resolution.

No case-specific public announcement of new forensic testing, investigative genetic genealogy results, an age-progression image, or a newly identified suspect was located.

The continued availability of an official missing-person listing is significant because it preserves Tiffany’s identifying information for public recognition and investigative reference. However, the existence or continued publication of a database entry should not be mistaken for a newly announced investigative breakthrough.

The lack of recent public announcements does not establish that investigators have stopped reviewing the case. It means only that no recent case-specific development could be independently verified from the publicly accessible information examined.

Conclusion and Public Appeal for Information

More than fifteen years after Tiffany Debra Humphrey was last seen on February 25, 2011, her disappearance remains publicly unresolved. The verified facts establish her identity, physical description, last-seen date, and the law enforcement agency associated with her case. They do not establish what happened to her.

Tiffany was just 24 years old when she disappeared. Her case deserves continued attention without speculation, sensationalism, or unsupported allegations. Even information that appears minor may be worth sharing with investigators if it relates to her whereabouts or circumstances around the time she went missing.

Anyone with information about Tiffany Debra Humphrey is encouraged to contact the Contra Costa County Sheriff’s Office at (925) 335-1580 and reference case number SP1103555. Information may also be provided through the California Department of Justice’s missing-person hotline at 1-800-222-FIND (1-800-222-3463).

The central question remains unanswered: What happened to Tiffany Humphrey after February 25, 2011? Until reliable evidence establishes her whereabouts or fate, her disappearance remains a case in need of answers.