U.S. Department of Health & Human Services
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Research shows that substance use and mental illnesses are common in the United States, affecting millions of people each year. SAMHSA collects data through multiple sources and surveys and provides access to public-use data files and documentation to support a better understanding of mental illness and substance use disorders in America.
If you would like to read descriptions of the different surveys, please check out the Data Sources page.
The SAMHDA list of publications provides quick access to a bibliography of the peer-reviewed studies that have used SAMHSA data to advance the field of research related to mental health and substance use.
Not sure where to start? Use the Data Source Finder to learn about SAMHSA data sources and to find relevant public-use files.
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The National Mental Health Services Survey (N-MHSS) collects statistics on the services and characteristics of mental health treatment facilities across the U.S. The annual survey reports national- and state-level data on both public and private specialty mental health treatment facilities. This includes psychiatric hospitals; nonfederal general hospitals with separate psychiatric units; U.S. Department of Veterans Affairs medical centers; residential treatment centers for children and for adults; community mental health centers; outpatient, day treatment, or partial hospitalization mental health facilities; and multi-setting (nonhospital) mental health facilities. This survey is a companion to the National Survey of Substance Abuse Treatment Services (N-SSATS).
Mental Health Client-Level Data (MH-CLD) and the Mental Health Treatment Episode Data Set (MH-TEDS) provide data from state mental health agencies. This includes information on mental health diagnoses and also treatment outcomes, demographics, and substance use characteristics for individuals in mental health treatment services that report to state administrative data systems.
The National Survey on Drug Use and Health (NSDUH), formerly the National Household Survey on Drug Abuse, is an annual survey conducted since 1990. NSDUH measures the use of illegal drugs, prescription drugs, alcohol, and tobacco, and the misuse of prescription drugs. It also measures substance use disorders and mental health care. Estimates are provided at the national, state, and local level and can be used to follow trends in substance use and mental health.
The Drug Abuse Warning Network (DAWN) is a nationally representative public health surveillance system that monitors drug-related visits to hospital emergency departments (ED). DAWN is used to monitor trends in substance use and misuse, emerging new substances and combinations, as well as to estimate the impact of substance use on the nation’s healthcare system. Data for ED visits include demographics, substances involved, toxicology confirmation, route of administration, type of case, and disposition of the patient following their visit.
The Treatment Episode Data Set–Admissions (TEDS-A) is a national data system of annual admissions to substance use treatment facilities. Some states report only publicly funded admissions, while other states collect privately funded admissions from facilities that receive public funding. The data include demographics on all available admissions for clients ages 12 and over as well as substance use characteristics such as substances used, age at first use, and route of use.
The Treatment Episode Data Set–Discharges (TEDS-D) reports information on annual discharges from substance use treatment facilities. Some states report only publicly funded admissions, while other states collect privately funded admissions from facilities that receive public funding. The data include demographics on all available admissions for clients ages 12 and over as well as substance use characteristics such as substances used, age at first use, and route of use.
The National Survey of Substance Abuse Treatment Services (N-SSATS) is a census designed to collect information from all substance use treatment facilities in the 50 states, Washington, DC, and the U.S. territories. Facilities included are both public and private, and the yearly data collection aims to characterize and quantify the current state of the U.S. substance use treatment delivery system.
Please select the year or range of years that you’d like to see data for.
The National Survey on Drug Use and Health (NSDUH) Small Area Estimates displays the prevalence of mental health or substance use issues within a geographic area. Use this tool to compare between areas, look at how the outcome has changed over time, or compare the data to related issues.
Use the Public-Use and Restricted-Use Data Analysis Systems (PDAS and RDAS) tools to run a quick analysis, cross-tabulation, or logistic regression. Download and save results as a CSV file. View the video tutorials in the Get Help section to get started.
Preliminary Findings from Drug-Related Emergency Department Visits, 2021. An analysis of 2021 preliminary data presents (1) nationally representative weighted estimates for the top five drugs in drug-related ED visits, (2) the assessment of monthly trends and drugs involved in polysubstance ED visits in a subset of sentinel hospitals, and (3) the identification of drugs new to DAWN’s Drug Reference Vocabulary.
We have the following resources to help you find the data you need: