San Francisco Overdose Deaths Show Signs of Decline, but Crisis Remains Severe
Preliminary data indicate that fatal drug overdoses in San Francisco may have declined again in 2025, following a significant reduction in deaths the previous year. Despite the improvement, however, the number of people dying from accidental overdoses remains substantially higher than it was before the COVID-19 pandemic.
San Francisco's overdose crisis has been driven largely by the spread of powerful synthetic opioids, particularly FYL, throughout the illicit drug supply. The growing presence of FYL has transformed the local drug market and contributed to years of elevated overdose deaths.
In 2021, then-San Francisco Mayor London Breed declared a state of emergency in the Tenderloin, one of the areas most heavily affected by the crisis. More recently, the city's Board of Supervisors has supported proposals from current Mayor Daniel Lurie aimed at accelerating certain processes intended to address the city's ongoing drug and overdose problems.
To monitor these developments, local data have been compiled to track accidental drug overdose deaths and identify broader patterns in the epidemic. Information has been collected from both local and federal agencies, including monthly reports from the San Francisco Office of the Chief Medical Examiner.
The data provide insight into how overdose deaths have changed over time, where fatalities are occurring, which populations are most affected, and the substances most frequently identified in toxicology results.
The figures are updated regularly as new preliminary information becomes available from the medical examiner's office.
About the Overdose Data
The analysis relies primarily on monthly reports from the San Francisco Office of the Chief Medical Examiner. These reports provide some of the most current and detailed information available about accidental overdose deaths in the city, including the proportion of fatalities involving FYL.
The local figures may differ from overdose statistics published by the U.S. Centers for Disease Control and Prevention (CDC). Federal data are compiled using different reporting methods and may not contain the same level of detail available to local medical examiner and public health authorities.
Accidental drug overdose deaths began increasing sharply in San Francisco during the mid-to-late 2010s as FYL became increasingly established in the local illicit drug supply.
FYL is an extremely potent synthetic opioid. According to public health authorities, its high potency means that very small quantities can cause a fatal overdose, particularly when people are unaware that it has been mixed into another substance.
Where the Crisis Has Had the Greatest Impact
Overdose deaths have been heavily concentrated in and around the Tenderloin and South of Market, commonly known as SOMA, neighborhoods.
Together, these areas account for more than 40% of San Francisco's overdose deaths. Many fatalities occur outdoors, including on sidewalks and near residential and commercial buildings.
Some locations have experienced multiple fatal overdoses at the same address. Single Room Occupancy, or SRO, properties have been particularly affected.
Previous investigations found that at least 166 people died from fatal overdoses in city-funded hotels during 2020 and 2021, illustrating the extent to which the overdose crisis has affected certain residential environments.
The geographic concentration of deaths also highlights how unevenly the crisis has affected different parts of the city.
The Pandemic's Impact
The COVID-19 pandemic appears to have played a role in the sharp increase in overdose deaths seen during 2020 and early 2021.
During the pandemic, some substance use treatment programs reduced their capacity or temporarily closed. At the same time, public health officials reported increases in drug and alcohol use as people experienced greater isolation, stress, and depression.
Another factor may have been the increased number of people using drugs alone.
When someone experiences an overdose without another person nearby, there may be no one available to recognize the emergency, administer Naloxone, or call for medical assistance. Social isolation during the early stages of the pandemic may therefore have increased the risk that overdoses would become fatal.
Why Deaths Rose in 2023 and Fell in 2024
The reasons behind the increase in San Francisco overdose deaths in 2023 remain unclear. Likewise, experts have not identified a single explanation for the substantial decline recorded in 2024.
Several factors may have contributed to the improvement, including expanded access to overdose-reversal medication, greater availability of treatment, and increased awareness of overdose risks.
Public health officials have also emphasized the importance of making treatment and harm-reduction resources easier to access.
However, the changing composition of the illicit drug supply means that overdose trends can shift rapidly, making it difficult to attribute changes in mortality to one specific factor.
Certain Communities Face Disproportionately High Risks
The burden of the overdose epidemic has not been distributed evenly across San Francisco's population.
Available data show substantial racial disparities in fatal overdose rates. Black residents have experienced overdose mortality rates several times higher than those recorded among Hispanic and white residents, reflecting disparities that have also been documented at the national level.
Gender and age differences are also apparent.
The overwhelming majority of people who died from accidental overdoses in 2024 were men. Adults between the ages of 35 and 64 represented the largest share of fatalities.
These demographic patterns demonstrate that the overdose crisis affects communities differently and that overall citywide statistics do not capture the full variation in risk.
FYL Remains a Major Factor
FYL was identified in more than 70% of San Francisco's accidental overdose deaths in 2024. In many cases, it was detected alongside other substances rather than appearing as the only drug involved.
The synthetic opioid is frequently incorporated into other illicit drugs because of its extreme potency. Its presence can increase the strength of a drug mixture while also increasing the risk of poisoning and fatal overdose.
This creates an additional challenge because people may not always know which substances are present in what they purchase or consume.
However, experts caution against viewing FYL as the only explanation for San Francisco's overdose crisis.
The illicit drug supply increasingly contains combinations of opioids and stimulants. FYL may be mixed with substances such as methamphetamine, sometimes without the user's knowledge.
These combinations can complicate both prevention and treatment efforts and make the effects of an individual drug supply increasingly difficult to predict.
Expanding Access to Treatment and Naloxone
San Francisco public health officials have expanded access to substance use treatment and overdose-prevention resources in recent years.
Since 2022, efforts to increase treatment availability have contributed to record numbers of admissions to substance use disorder programs, with treatment admissions reaching particularly high levels in 2024.
Policy changes at both the local and federal levels have also expanded access to medications used to treat opioid use disorder.
At the same time, Naloxone has become increasingly available in communities throughout the city. The medication can rapidly reverse an opioid overdose when administered promptly, making widespread access an important component of overdose prevention.
Although the recent decline in fatal overdoses represents a significant change from the peak years of the crisis, San Francisco continues to experience overdose mortality at levels well above those seen before the pandemic.
The continued presence of highly potent synthetic opioids, unpredictable drug combinations, disparities in overdose mortality, and unequal access to healthcare and treatment remain important challenges.
The preliminary 2025 figures therefore provide evidence of a potentially continuing decline, but they do not indicate that the city's overdose crisis has been resolved. Continued monitoring of local data, access to treatment, overdose-reversal medication, and changes in the illicit drug supply will remain important for understanding how the epidemic develops.
Source: San Francisco Chronicle