About 16.8% of Americans aged 12 and older, or 48.4 million people, had a substance use disorder in the past year. That’s roughly 1 in 6 people, based on 2024 data from the federal government’s largest annual drug use survey.
That number includes disorders involving alcohol, illicit drugs, and prescription medications used in ways other than prescribed. It’s a broader picture than most people expect, and the reality behind it is more nuanced than a single percentage suggests.
What “Substance Use Disorder” Actually Means
The clinical world has largely moved away from the term “drug addict.” The current diagnostic framework uses “substance use disorder” (SUD), which is measured on a spectrum of mild, moderate, and severe based on how many warning signs a person shows. Those signs include things like cravings, failed attempts to cut back, using more than intended, neglecting responsibilities, and continued use despite harm to relationships or health.
A mild disorder involves 2 or 3 of these symptoms. Moderate means 4 or 5. Severe, which is closest to what most people picture when they think of addiction, requires 6 or more out of 11 possible symptoms. This matters because it means that 16.8% figure captures a wide range of experiences, from someone who repeatedly drinks more than they planned and can’t seem to stop, to someone in the grip of a severe heroin or fentanyl dependency.
Opioids: A Shifting Picture
Opioid misuse, which includes both prescription painkillers and heroin, affected about 2.7% of the population aged 12 and older in 2024. That’s 7.8 million people. The number has actually been declining: in 2021, it was 3.2%, or 9.1 million people. Among those with an opioid use disorder tied to heroin or prescription painkillers, about 37% had a severe disorder, while roughly 42% had a mild one.
The decline in opioid misuse rates doesn’t mean the crisis is over. Overdose deaths remain extraordinarily high, driven largely by synthetic opioids like fentanyl that are far more potent than earlier waves of the epidemic. A smaller number of people using opioids can still produce devastating mortality when the supply is more lethal.
The Cost of the Crisis
The economic toll is staggering. The opioid epidemic alone cost an estimated $1.02 trillion in 2017, the most recent year with a comprehensive analysis. That includes $471 billion tied to people living with opioid use disorder and $550 billion from fatal overdoses. Per person, the costs break down into lost productivity, reduced quality of life, healthcare, criminal justice involvement, and treatment. The single largest component for someone living with opioid use disorder isn’t medical bills. It’s the reduction in quality of life, valued at roughly $183,000 per case.
For fatal overdoses, the numbers are even more stark. Each death carries an estimated cost of over $10 million when accounting for the economic value of a life lost, plus $1.4 million in lost productivity. These figures only cover opioids. Add alcohol, stimulants, and other substances, and the full economic burden of addiction in the U.S. is considerably larger.
80% of People Who Need Treatment Don’t Get It
Perhaps the most striking number in the data isn’t how many Americans have a substance use disorder. It’s how few get help. In 2024, only about 19.3%, roughly 1 in 5 people who needed substance use treatment, actually received it. That means 80% of the people meeting diagnostic criteria for a substance use disorder went without professional treatment in the past year.
The reasons behind this gap are layered. Cost and lack of insurance coverage play a role, but so do stigma, long wait times for treatment programs, shortage of providers in rural areas, and the simple fact that many people with a substance use disorder don’t believe they need help, particularly those on the milder end of the spectrum. For people with severe disorders, barriers like unstable housing and lack of transportation can make accessing care feel nearly impossible even when they want it.
Putting the Numbers in Context
One in six Americans with a substance use disorder is a higher rate than most other chronic conditions people are familiar with. For comparison, about 11.6% of the U.S. population has diabetes. Yet addiction receives a fraction of the public health infrastructure and far more social stigma.
It’s also worth noting that these numbers come from a household survey, which means they likely undercount certain populations. People who are homeless, incarcerated, or living in residential treatment facilities aren’t captured in the data. The true prevalence is almost certainly higher than 16.8%. The survey also relies on self-reporting, and people tend to underreport substance use, particularly for illegal drugs.
The 48.4 million figure represents people who crossed a clinical threshold in the past year. Millions more use substances in ways that are risky but don’t yet meet the formal criteria for a disorder. The line between heavy use and a diagnosable condition is not always obvious to the person experiencing it, which is part of why the treatment gap remains so wide.