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2016-2018 NSDUH Substate Region Definitions

Published by Substance Abuse and Mental Health Services Administration | U.S. Department of Health & Human Services | Metadata Last Checked: September 07, 2025 | Last Modified: 2025-09-06
Use these maps and tables to understand the geographic boundaries used in the2016-2018 National Surveys on Drug Use and Health (NSDUH) substate estimates. The resource is available as a PDF or HTM file. There is also additional documentation in SAS and Excel.

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