This occasional paper presents national demographic subgroup data for the 1975-2014 Monitoring the Future (MTF) national survey results on 8th, 10th, and 12th graders' use of drugs, alcohol, and tobacco. MTF is funded by the National Institute on Drug Abuse at the National Institutes of Health under a series of investigator-initiated, competitive research grants. The study covers all major classes of illicit and licit drugs for an array of population subgroups. The 2014 subgroup data presented here accompany the "Monitoring the Future National Survey Results on Drug Use: 1975-2014: Overview, Key Findings on Adolescent Drug Use" and the "Monitoring the Future National Survey Results on Drug Use, 1975-2014: Volume I, Secondary School Students." Since 2013, the MTF subgroup definitions and data have been presented in a series of occasional paper, such as this, as tables and figures to facilitate the examination and interpretation of trend data. "Volume I" contains a description of MTF's design and purposes, as well as extended reporting on substance use of all kinds--licit and illicit--and a number of related factors, such as attitudes and beliefs about drugs, age of initiation, noncontinuation of drug use, perceived availability, relevant conditions in the social environment, history of daily marijuana use, use of drugs for the treatment of ADHD, and sources of prescription drugs used outside of medical supervision. The trends offered here in tabular and graphic forms cover demographic subgroups based on: (1) gender; (2) college plans; (3) region of the country; (4) population density; (5) education level of the parents (a proxy for socioeconomic level); and (6) racial/ethnic identification. Detailed descriptions of the demographic categories are provided in the section below. Data for 12th grade begins with 1975, the first year in which a nationally representative sample of high school seniors was surveyed. Data for 8th and 10th grades begin with 1991, when the study's nationally representative annual surveys were expanded to include those grade levels. [For "Monitoring the Future National Survey Results on Drug Use, 1975-2014. Volume 1, Secondary School Students," see ED578369. For "Monitoring the Future National Survey Results on Drug Use, 1975-2014: Overview, Key Findings on Adolescent Drug Use," see ED578603.]