Roughly 48 million Americans aged 12 and older, about 17% of that population, met the clinical criteria for a substance use disorder in 2022, the most recent year with full national survey data. That figure includes both drug and alcohol addiction. When you narrow it to drug use disorders alone (excluding alcohol), the number drops to about 27 million people, or close to 10% of Americans aged 12 and older. These estimates come from the National Survey on Drug Use and Health, the largest annual survey tracking addiction in the United States.
What “Addiction” Means in These Numbers
The national survey measures substance use disorders, which is the clinical term for what most people mean by addiction. A substance use disorder is diagnosed when drug or alcohol use causes significant problems: failed attempts to cut back, interference with work or relationships, withdrawal symptoms, or needing more of a substance to get the same effect. The survey captures a spectrum from moderate to severe, and the 17% figure includes all levels.
It’s worth noting that many people with a substance use disorder don’t identify as “addicted.” The condition exists on a continuum, and someone with a moderate alcohol use disorder might look very different from someone injecting fentanyl daily. Both count in the national statistics.
Which Substances Drive the Numbers
Alcohol remains the most common addiction in the United States by a wide margin, affecting roughly 29 million people. Among drug-specific disorders, marijuana use disorder is the most prevalent, followed by prescription pain relievers and stimulants. Opioid use disorder, while responsible for the most deaths, affects a smaller slice of the population, estimated at around 5 to 6 million people.
Many individuals meet the criteria for more than one substance use disorder at a time. Someone addicted to opioids may also have an alcohol use disorder, and these overlapping cases make the total count somewhat tricky to interpret. The 48 million figure counts each person once, regardless of how many substances are involved.
Age Groups Most Affected
Young adults are consistently the most likely age group to have a substance use disorder. Research tracking rates across the lifespan found that alcohol use disorders peak in the mid-twenties, hitting around 32% of men at age 25 and 24% of women at age 22 before declining steadily. Cannabis use disorders are highest at 18 (13% of men, 7% of women) and drop steeply by age 30.
Tobacco use disorders follow a slightly different pattern, peaking in the late twenties, dipping through the thirties, then rising again in the mid-forties before declining for good. This second bump likely reflects a generation that started smoking when it was more socially accepted and never quit.
After age 30, rates of most substance use disorders fall consistently. By age 65, addiction rates are a fraction of what they are among younger adults, though alcohol misuse in older adults is increasingly recognized as underdiagnosed.
The Overdose Death Toll
Drug overdose deaths provide another lens on the scope of addiction in the US. In 2024, an estimated 80,391 Americans died from drug overdoses, a significant 27% decrease from the 110,037 deaths in 2023. That decline is the first major drop after years of escalation, driven largely by synthetic opioids like fentanyl. Even with the improvement, overdose deaths remain far higher than they were a decade ago, and roughly 220 people still die every day from overdoses.
The gap between the number of people with addiction (tens of millions) and the number who die (tens of thousands) reflects the fact that most substance use disorders involve alcohol, marijuana, or prescription drugs that rarely cause fatal overdoses on their own. The deadliest corner of the crisis is concentrated in opioids and, increasingly, stimulants like methamphetamine.
The Treatment Gap
Perhaps the most striking statistic isn’t how many Americans have a substance use disorder. It’s how few get help. National data consistently shows that only about 1 in 4 people with a substance use disorder receives any form of treatment in a given year. Among college students, the gap is even wider: a 2021 analysis found that more than one in five college students met the criteria for a substance use disorder, yet only 4.6% of those students received treatment of any kind.
The reasons are layered. Many people don’t believe they need treatment. Others face cost barriers, lack of available programs, or fear of stigma. Insurance coverage for addiction treatment has improved in recent years, but access remains uneven, particularly in rural areas where treatment facilities are sparse and waiting lists can stretch for weeks.
Mental Health and Addiction Overlap
About half of people who experience a mental illness during their lifetime will also develop a substance use disorder, and the reverse is equally true. Depression, anxiety, PTSD, and bipolar disorder all increase the risk of addiction, partly because people use substances to manage symptoms they can’t otherwise control.
This overlap complicates both diagnosis and treatment. Someone treated for depression without addressing their drinking is unlikely to improve, and someone in rehab who doesn’t receive mental health care is more likely to relapse. Integrated treatment programs that address both conditions simultaneously tend to produce better outcomes, but they’re less widely available than standalone addiction or mental health services.
How the US Compares
The United States has higher rates of substance use disorders than most other high-income countries. Americans consume more opioids per capita than any other nation, a legacy of aggressive prescribing practices in the 1990s and 2000s that seeded widespread dependence. Stimulant use, particularly methamphetamine, is also higher in the US than in most of Europe or East Asia. Alcohol use disorder rates are broadly comparable to other Western nations, though drinking patterns vary.
The 10% drug addiction rate and 17% overall substance use disorder rate place addiction among the most common health conditions in the country, comparable in prevalence to diabetes and more common than most cancers. Yet funding, infrastructure, and public attention still lag far behind what those numbers would suggest.