Quick Summary
The federal government’s 2024 numbers show progress and a stubborn problem at the same time. Overdose deaths fell by roughly a quarter, the largest single-year drop on record, while the share of Americans who needed substance use treatment and did not receive it grew. This guide walks through ten data points from SAMHSA, the CDC, and the National Institute on Drug Abuse so families know what the current picture really looks like.
Key Takeaways
- U.S. drug overdose deaths fell about 27 percent in 2024, the steepest decline since national tracking began.
- About 48.4 million Americans aged 12 and older had a substance use disorder in 2024.
- Roughly 80 percent of people who needed treatment did not receive it.
- Fentanyl-involved deaths fell about 36 percent year over year, though overdose remains the leading cause of death for adults 18 to 44.
- Treatment access is most accessible for adolescents and most limited for young adults aged 18 to 25.
Understanding the scale of substance use in the United States can feel overwhelming, especially when you are watching a family member struggle and trying to figure out what substance use resources to access next. Numbers alone do not tell anyone’s story, but they do offer perspective. They show what is changing, what is not, and where the gaps in the system actually sit.
The data in this article comes from three official sources: the 2024 National Survey on Drug Use and Health (NSDUH) published by the Substance Abuse and Mental Health Services Administration, the CDC’s provisional drug overdose statistics, and the National Institute on Drug Abuse. Together they paint a clearer picture than any single headline ever could.
10 Data Points That Define the Current Picture
1. Overdose deaths fell by about 27 percent in 2024
Provisional CDC data show U.S. drug overdose deaths dropped from an estimated 110,037 in 2023 to 80,391 in 2024, a decrease of roughly 26.9 percent. According to the CDC’s May 2025 announcement, this is the lowest annual death toll since 2019 and the largest one-year percentage drop the agency has ever recorded.
2. Fentanyl-involved deaths dropped 36 percent
Deaths involving illicitly manufactured fentanyl fell from approximately 76,282 in 2023 to 48,422 in 2024. Researchers credit expanded naloxone access, the maturing impact of opioid settlement funds reaching state and local programs, and shifts in how people are using drugs. The trend is encouraging, but fentanyl still drives the majority of overdose deaths in the country, highlighting the ongoing overdose crisis trends.
3. About 48.4 million Americans had a substance use disorder in 2024
SAMHSA’s 2024 survey found that 16.8 percent of people aged 12 and older, roughly 48.4 million Americans, met clinical criteria for a substance use disorder in the past year. That number is essentially unchanged from 2023, when 17.1 percent (48.5 million) met criteria. Improvement in overdose deaths is not yet showing up in the prevalence of substance use disorders themselves.
4. 73.6 million people used an illicit drug in the past year
Past-year illicit drug use ticked up to 25.5 percent of people aged 12 and older in 2024, compared with 24.9 percent in 2023. The category includes marijuana, which has been driving most of the year-over-year change as state-level legalization expands.
5. Roughly 7.6 million Americans misused opioids in the past year
Opioid misuse in the 2024 NSDUH covers prescription opioid misuse and use of illicit opioids such as heroin and fentanyl. About 7.6 million people aged 12 and older fell into this category. While substantially lower than peak years, this number underscores why opioid-targeted prevention and treatment remain a national priority.
6. 80 percent of people who needed treatment did not get it
Of the 52.6 million people who needed substance use treatment in 2024, only about 10.2 million (3.5 percent of the population aged 12 and older) actually received it. That leaves roughly 80 percent of people who needed help without it. SAMHSA’s announcement of the survey highlighted this gap as one of the most pressing public health challenges in behavioral health today.
7. The treatment gap widened slightly for adults
Among American adults specifically, the share who needed substance use treatment needs and did not receive it grew from 94.7 percent in 2023 to 95.6 percent in 2024. The widening is small in absolute terms but moves in the wrong direction, and it has been the subject of follow-up commentary from policy and research groups since the data were released.
8. Adolescents have the highest treatment access
About 30.2 percent of adolescents (ages 12 to 17) who needed substance use treatment received it in 2024, the highest rate of any age group. Adults 26 and older came next at 20.5 percent. Young adults aged 18 to 25 had the lowest access at 11.3 percent. Young adulthood is also a window when substance use risk often peaks, making the low number especially worth attention in light of the substance use factors at play.
9. 61.5 million adults experienced any mental illness in the past year
Beyond substance use specifically, 23.4 percent of U.S. adults (61.5 million) experienced any mental illness in 2024, and 5.6 percent (14.6 million) experienced serious mental illness. The overlap between mental health and substance use disorders is significant. SAMHSA’s broader work on co-occurring disorders consistently highlights how often these conditions appear together.
10. Overdose remains the leading cause of death for Americans 18 to 44
Despite the 2024 decline, drug overdose continues to be the leading cause of death for U.S. adults between the ages of 18 and 44. That single statistic captures why progress matters so much and why the work is far from done. Families and communities are still losing young adults at a scale that no other cause of death matches in this age range.
What the Numbers Tell Families
Three patterns stand out across the 2024 data. First, harm reduction works. The pairing of broader naloxone access, growing public awareness, and infrastructure built from opioid settlement funds is showing up in the death numbers in a measurable way. Second, the treatment gap is real, persistent, and getting slightly worse for adults even as overdose deaths fall. Third, mental health and substance use disorders are deeply intertwined, and integrated mental health care alongside coordinated care for both improves outcomes more than treating either condition in isolation.
For families, the practical takeaway is that early conversations, asking questions about treatment options, and understanding which services exist at the local level are all reasonable steps to take. The data shows that most people who would benefit from professional help are not currently receiving it, often because they do not know what is available or how to access it.
When to Reach Out for Professional Help
A clinical assessment is the right starting point any time you are unsure. Treatment is not one-size-fits-all, and a qualified clinician can help you think through what level of care fits a person’s situation. Outpatient counseling, intensive outpatient programs, partial hospitalization, residential treatment, and medical detox all exist because different situations call for different responses.
If you would like to talk with someone about what an assessment looks like or what might be appropriate for a loved one, the admissions team at Discovery Point Retreat can help you understand the process and walk you through what we offer.
We’re here to make treatment as accessible and affordable as possible — and are in network with many insurance providers. Not sure about your coverage? We can help.
References
- Centers for Disease Control and Prevention, National Center for Health Statistics. Drug overdose deaths in the United States, 2023-2024. NCHS Data Brief, 2024. cdc.gov.
- Substance Abuse and Mental Health Services Administration. 2024 National Survey on Drug Use and Health. Accessed June 8, 2026. samhsa.gov.
- National Institute on Drug Abuse. Drug overdose death rates. Accessed June 8, 2026. nida.nih.gov.
Resources
If you or someone you love is in crisis, the following national resources are available 24 hours a day, free, and confidential.
- 988 Suicide and Crisis Lifeline. Call or text 988, or chat at 988lifeline.org. Free, confidential support for any kind of emotional distress, including substance use and overdose-related concerns.
- SAMHSA National Helpline. Call 1-800-662-HELP (4357) or visit the SAMHSA National Helpline page for free, confidential referrals to local treatment.
- 911. For any medical emergency, including suspected overdose, call 911 immediately. If naloxone is available, administer it according to the package instructions while waiting for help.
This article is general education and is not medical advice. It does not establish a clinician-patient relationship and is not a substitute for an individual assessment by a qualified mental health or addiction treatment professional. All statistics cited reflect the most current data available at time of writing.
