About 48.4 million Americans aged 12 or older had a substance use disorder in 2024, roughly 1 in 6 people. That figure, from the federal government’s annual household survey, includes 28.2 million with a drug use disorder, 27.9 million with an alcohol use disorder, and 7.7 million who had both. These numbers reflect people who met clinical criteria for a disorder within the past year, not lifetime totals.
What “Substance Use Disorder” Actually Means
Clinicians diagnose substance use disorder on a spectrum using 11 possible symptoms. These include taking a substance in larger amounts or for longer than intended, repeated failed attempts to cut back, spending excessive time obtaining or recovering from the substance, cravings, neglecting responsibilities at work or home, continuing use despite relationship problems, giving up activities you once enjoyed, using in physically dangerous situations, needing more of the substance to get the same effect, and experiencing withdrawal.
Meeting 2 or 3 of those criteria qualifies as a mild disorder. Four or 5 is moderate. Six or more is severe. This matters because the 48.4 million figure spans the entire range. Among the 19.2 million people with a marijuana use disorder in 2023, for instance, more than half (55%) had a mild disorder, while only 18% had a severe one. So the headline number captures everything from someone who repeatedly drinks more than they planned to someone in the grip of a severe opioid dependency.
Which Substances Drive the Numbers
Alcohol remains the single most common substance involved, with 27.9 million people meeting criteria for an alcohol use disorder in 2024. Marijuana use disorder is the most common drug-specific diagnosis, affecting 19.2 million people in the 2023 survey. Opioids, stimulants like methamphetamine and cocaine, and prescription medications account for much of the remainder, though the federal survey doesn’t publish standalone population counts for each of those categories as cleanly.
The opioid crisis, particularly illicit fentanyl, has commanded the most public attention for good reason. A 2025 White House analysis estimated that illicit opioids alone cost the U.S. $2.7 trillion in 2023, equivalent to nearly 10% of GDP. That staggering figure factors in premature deaths ($1.1 trillion), lost quality of life for people living with opioid use disorder ($1.34 trillion), and direct costs like $107 billion in extra healthcare spending, $107 billion in lost worker productivity, and $63 billion in crime-related expenses. People with opioid use disorder cost the healthcare system roughly $19,000 more per year than people without it.
Overdose Deaths Are Declining
After years of relentless increases, drug overdose deaths in the U.S. dropped notably. Provisional CDC data through November 2025 shows approximately 70,200 predicted deaths over the trailing 12-month period, a 15.9% decrease compared to the prior year. That is still an enormous toll, more than car accidents and gun deaths in most years, but the downward trend is the most significant reversal since the overdose crisis accelerated in the mid-2010s.
Mental Health and Addiction Overlap
Substance use disorders rarely exist in isolation. In 2024, roughly 21.2 million American adults had both a mental illness and a substance use disorder at the same time. Depression, anxiety, PTSD, and other conditions frequently fuel substance use, and substance use in turn worsens mental health. This overlap complicates treatment because addressing only one condition while ignoring the other tends to produce worse outcomes.
Most People With a Disorder Don’t Get Treatment
The gap between the number of people who need help and those who actually receive it is enormous. Among college students with a substance use disorder in 2021, fewer than 5% received any form of treatment. While that specific figure comes from a younger population, the broader pattern holds across age groups: the vast majority of people meeting diagnostic criteria for a substance use disorder in any given year do not engage with professional treatment. Barriers include cost, stigma, lack of available programs, not recognizing the problem, and not believing treatment would help.
There is, however, a substantial recovery community. In 2024, about 31.7 million adults (12.2% of the adult population) said they had at some point experienced a problem with drugs or alcohol. Of that group, nearly three-quarters, 23.5 million people, considered themselves to be in recovery or to have recovered. That number is a useful counterweight to the crisis framing: millions of Americans have navigated their way out of a substance use problem, with or without formal treatment.
Putting the Numbers in Context
When people search “how many Americans are drug addicts,” they often expect a single alarming number. The reality is layered. The broadest answer is 48.4 million with any substance use disorder, but that includes alcohol alongside drugs and spans mild to severe cases. The drug-specific number is 28.2 million. The severe end of the spectrum, people whose lives are most visibly disrupted, is a subset of that. And 23.5 million adults consider themselves in recovery, proof that these numbers represent a condition people move through, not a permanent identity.
What is clear is the scale. Substance use disorder touches roughly 1 in 6 Americans over the age of 12 in any given year. It costs trillions of dollars, kills tens of thousands, and overlaps heavily with mental illness. It also remains undertreated by a wide margin, with most affected people never receiving professional help.